diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 2d1b24fa28..20279ddac1 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/vscode/devcontainers/python:1-3.10@sha256:c5b379b09a94ac1ccb437e000dd54c96164a8322d0c53d2bcb25f225e27924e6
+FROM mcr.microsoft.com/vscode/devcontainers/python:3.12
 
 ENV POETRY_VERSION="1.7.1"
 
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index fbd6772dd8..f2e6f1ba01 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -11,7 +11,7 @@ jobs:
     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
     - uses: actions/setup-python@b64ffcaf5b410884ad320a9cfac8866006a109aa # v4.8.0
       with:
-        python-version: '3.10'
+        python-version: '3.12'
     - uses: actions/setup-node@1a4442cacd436585916779262731d5b162bc6ec7 # v3.8.2
       with:
         node-version: '16.x'
diff --git a/.github/workflows/test_endpoints.yaml b/.github/workflows/test_endpoints.yaml
index 419e570342..4fc17401fe 100644
--- a/.github/workflows/test_endpoints.yaml
+++ b/.github/workflows/test_endpoints.yaml
@@ -8,10 +8,10 @@ jobs:
     steps:
     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
 
-    - name: Set up Python 3.10
+    - name: Set up Python 3.12
       uses: actions/setup-python@b64ffcaf5b410884ad320a9cfac8866006a109aa # v4.8.0
       with:
-        python-version: '3.10'
+        python-version: '3.12'
 
     - name: Upgrade pip
       run: python -m pip install --upgrade pip
@@ -45,7 +45,7 @@ jobs:
       working-directory: ${{ github.workspace }}
       shell: bash
       run: |
-        mkdir -p "${{ github.workspace }}/env/" && cp -fR $(poetry env list | poetry env info -p)/lib/python3.10/site-packages "${{ github.workspace }}/env/"
+        mkdir -p "${{ github.workspace }}/env/" && cp -fR $(poetry env list | poetry env info -p)/lib/python3.12/site-packages "${{ github.workspace }}/env/"
 
     - name: Install development .env file
       working-directory: ${{ github.workspace }}
@@ -58,7 +58,7 @@ jobs:
         echo "PYTHONPATH=/github/workspace/env/site-packages:${{ env.PYTHONPATH}}" >> $GITHUB_ENV
 
     - name: Checks for new endpoints against AWS WAF rules
-      uses: cds-snc/notification-utils/.github/actions/waffles@52.2.2
+      uses: cds-snc/notification-utils/.github/actions/waffles@53.0.1
       with:
         app-loc: '/github/workspace'
         app-libs: '/github/workspace/env/site-packages'
diff --git a/.github/workflows/test_prod_config.yaml b/.github/workflows/test_prod_config.yaml
index d8c0fdc6dc..8e7ba34d00 100644
--- a/.github/workflows/test_prod_config.yaml
+++ b/.github/workflows/test_prod_config.yaml
@@ -11,7 +11,7 @@ jobs:
     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
     - uses: actions/setup-python@b64ffcaf5b410884ad320a9cfac8866006a109aa # v4.8.0
       with:
-        python-version: '3.10'
+        python-version: '3.12'
     - uses: actions/setup-node@1a4442cacd436585916779262731d5b162bc6ec7 # v3.8.2
       with:
         node-version: '16.x'
diff --git a/Makefile b/Makefile
index 8833fd26e4..71d608ebf6 100644
--- a/Makefile
+++ b/Makefile
@@ -55,6 +55,10 @@ coverage: venv ## Create coverage report
 run-dev:
 	poetry run flask run -p 6012 --host=localhost
 
+.PHONY: run-gunicorn
+run-gunicorn:
+	PORT=6012 poetry run gunicorn -c gunicorn_config.py application
+
 .PHONY: format
 format:
 	ruff check --select I --fix .
diff --git a/README.md b/README.md
index 77f29917a0..b679a8ff53 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ https://github.com/alphagov/notifications-admin
 ```
 
 Languages needed
-- Python 3.10
+- Python 3.12
 - [Node](https://nodejs.org/) 10.15.3 or greater
 - [npm](https://www.npmjs.com/) 6.4.1 or greater
 
@@ -58,15 +58,15 @@ On OS X:
 
 `brew install pyenv`
 
-2. Install Python 3.10.8 or whatever is the latest
+2. Install Python 3.12.7 or whatever is the latest
 
-`pyenv install 3.10.8`
+`pyenv install 3.12.7`
 
-3. If you expect no conflicts, set `3.10.8` as you default
+3. If you expect no conflicts, set `3.12.7` as you default
 
-`pyenv global 3.10.8`
+`pyenv global 3.12.7`
 
-4. Ensure that version `3.10.8` is now the default by running
+4. Ensure that version `3.12.7` is now the default by running
 
 `python --version`
 
@@ -77,7 +77,7 @@ eval "$(pyenv init -)"
 ```
 and open a new terminal.
 
-If you are still not running Python 3.10.8 take a look here: https://github.com/pyenv/pyenv/issues/660
+If you are still not running Python 3.12.7 take a look here: https://github.com/pyenv/pyenv/issues/660
 
 5. Install `poetry`:
 
@@ -85,7 +85,7 @@ If you are still not running Python 3.10.8 take a look here: https://github.com/
 
 6. Restart your terminal and make your virtual environtment:
 
-`mkvirtualenv -p ~/.pyenv/versions/3.10.8/bin/python notifications-admin`
+`mkvirtualenv -p ~/.pyenv/versions/3.12.7/bin/python notifications-admin`
 
 7. You can now return to your environment any time by entering
 
@@ -278,7 +278,7 @@ https://github.com/alphagov/notifications-admin
 ```
 
 Langages nécessaires
-- Python 3.10
+- Python 3.12
 - [Node](https://nodejs.org/) 10.15.3 ou supérieur
 - [npm](https://www.npmjs.com/) 6.4.1 ou plus
 ```shell
@@ -302,15 +302,15 @@ Sur macOS :
 
 `brew install pyenv`
 
-2. Installez Python 3.10.8 ou la dernière version
+1. Installez Python 3.12.7 ou la dernière version
 
-`pyenv install 3.10.8`
+`pyenv install 3.12.7`
 
-3. Si vous n'attendez aucun conflit, mettez `3.10.8` comme valeur par défaut
+3. Si vous n'attendez aucun conflit, mettez `3.12.7` comme valeur par défaut
 
-`pyenv global 3.10.8`
+`pyenv global 3.12.7`
 
-4. Assurez-vous que la version 3.10.8 est maintenant la version par défaut en exécutant
+4. Assurez-vous que la version 3.12.7 est maintenant la version par défaut en exécutant
 
 `python --version`
 
@@ -320,7 +320,7 @@ eval "$(pyenv init --path)"
 eval "$(pyenv init -)"
 ```
 et ouvrez un nouveau terminal.
-Si vous n’utilisez toujours pas Python 3.10.8, jetez un coup d’œil ici : https://github.com/pyenv/pyenv/issues/660
+Si vous n’utilisez toujours pas Python 3.12.7, jetez un coup d’œil ici : https://github.com/pyenv/pyenv/issues/660
 
 5. Installez `virtualenv` :
 
@@ -331,12 +331,12 @@ Si vous n’utilisez toujours pas Python 3.10.8, jetez un coup d’œil ici : ht
 ```
 export WORKON_HOME=$HOME/.virtualenvs
 export PROJECT_HOME=$HOME/Devel
-source ~/.pyenv/versions/3.10.8/bin/virtualenvwrapper.sh
+source ~/.pyenv/versions/3.12.7/bin/virtualenvwrapper.sh
 ```
 
 7. Redémarrez votre terminal et créez votre environnement virtuel :
 
-`mkvirtualenv -p ~/.pyenv/versions/3.10.8/bin/python notifications-admin`
+`mkvirtualenv -p ~/.pyenv/versions/3.12.7/bin/python notifications-admin`
 
 8. Vous pouvez maintenant retourner dans votre environnement à tout moment en entrant
 
diff --git a/ci/Dockerfile b/ci/Dockerfile
index 1520383fa5..f3addf1b18 100644
--- a/ci/Dockerfile
+++ b/ci/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-alpine3.18@sha256:d5ee9613c89c9bd4c4112465d2136512ea8629bce6ff15fa27144f3cc16b5c6b
+FROM python:3.12.7-alpine3.20
 
 ENV PYTHONDONTWRITEBYTECODE 1
 ENV POETRY_VERSION="1.7.1"
diff --git a/ci/Dockerfile.lambda b/ci/Dockerfile.lambda
index 9d96e1bc5c..d4f39b59b3 100644
--- a/ci/Dockerfile.lambda
+++ b/ci/Dockerfile.lambda
@@ -5,7 +5,7 @@ ARG POETRY_VERSION="1.7.1"
 ARG POETRY_VIRTUALENVS_CREATE="false"
 
 # Build image
-FROM python:3.10-alpine3.18@sha256:d5ee9613c89c9bd4c4112465d2136512ea8629bce6ff15fa27144f3cc16b5c6b as base
+FROM python:3.12-alpine3.20@sha256:5049c050bdc68575a10bcb1885baa0689b6c15152d8a56a7e399fb49f783bf98 as base
 
 ARG APP_DIR
 ARG APP_VENV
@@ -68,7 +68,7 @@ RUN . ${APP_VENV}/bin/activate \
     && make generate-version-file
 
 # Final image
-FROM python:3.10-alpine3.18@sha256:d5ee9613c89c9bd4c4112465d2136512ea8629bce6ff15fa27144f3cc16b5c6b as lambda
+FROM python:3.12-alpine3.20@sha256:5049c050bdc68575a10bcb1885baa0689b6c15152d8a56a7e399fb49f783bf98 as lambda
 
 ARG APP_DIR
 ARG APP_VENV
diff --git a/ci/Dockerfile.test b/ci/Dockerfile.test
index 418f87782c..4f59865132 100644
--- a/ci/Dockerfile.test
+++ b/ci/Dockerfile.test
@@ -1,4 +1,4 @@
-FROM python:3.10-alpine3.16@sha256:afe68972cc00883d70b3760ee0ffbb7375cf09706c122dda7063ffe64c5be21b
+FROM python:3.12-alpine3.20@sha256:5049c050bdc68575a10bcb1885baa0689b6c15152d8a56a7e399fb49f783bf98
 
 ENV PYTHONDONTWRITEBYTECODE 1
 
diff --git a/mypy.ini b/mypy.ini
index 2d3d5c255f..05a2cf8485 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1,5 +1,5 @@
 [mypy]
-python_version = 3.10
+python_version = 3.12
 
 [mypy-pytest.*]
 ignore_missing_imports = True
diff --git a/poetry.lock b/poetry.lock
index 39aba7fe69..1acc726313 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -652,20 +652,6 @@ files = [
     {file = "et_xmlfile-1.1.0.tar.gz", hash = "sha256:8eb9e2bc2f8c97e37a2dc85a09ecdcdec9d8a396530a6d5a33b30b9a92da0c5c"},
 ]
 
-[[package]]
-name = "exceptiongroup"
-version = "1.2.2"
-description = "Backport of PEP 654 (exception groups)"
-optional = false
-python-versions = ">=3.7"
-files = [
-    {file = "exceptiongroup-1.2.2-py3-none-any.whl", hash = "sha256:3111b9d131c238bec2f8f516e123e14ba243563fb135d3fe885990585aa7795b"},
-    {file = "exceptiongroup-1.2.2.tar.gz", hash = "sha256:47c2edf7c6738fafb49fd34290706d1a1a2f4d1c6df275526b62cbb4aa5393cc"},
-]
-
-[package.extras]
-test = ["pytest (>=6)"]
-
 [[package]]
 name = "execnet"
 version = "2.1.1"
@@ -882,7 +868,7 @@ files = [
 
 [package.dependencies]
 cffi = {version = ">=1.12.2", markers = "platform_python_implementation == \"CPython\" and sys_platform == \"win32\""}
-greenlet = {version = ">=2.0.0", markers = "platform_python_implementation == \"CPython\" and python_version < \"3.11\""}
+greenlet = {version = ">=3.0rc3", markers = "platform_python_implementation == \"CPython\" and python_version >= \"3.11\""}
 "zope.event" = "*"
 "zope.interface" = "*"
 
@@ -895,79 +881,88 @@ test = ["cffi (>=1.12.2)", "coverage (>=5.0)", "dnspython (>=1.16.0,<2.0)", "idn
 
 [[package]]
 name = "greenlet"
-version = "2.0.2"
+version = "3.1.1"
 description = "Lightweight in-process concurrent programming"
 optional = false
-python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
-files = [
-    {file = "greenlet-2.0.2-cp27-cp27m-macosx_10_14_x86_64.whl", hash = "sha256:bdfea8c661e80d3c1c99ad7c3ff74e6e87184895bbaca6ee8cc61209f8b9b85d"},
-    {file = "greenlet-2.0.2-cp27-cp27m-manylinux2010_x86_64.whl", hash = "sha256:9d14b83fab60d5e8abe587d51c75b252bcc21683f24699ada8fb275d7712f5a9"},
-    {file = "greenlet-2.0.2-cp27-cp27m-win32.whl", hash = "sha256:6c3acb79b0bfd4fe733dff8bc62695283b57949ebcca05ae5c129eb606ff2d74"},
-    {file = "greenlet-2.0.2-cp27-cp27m-win_amd64.whl", hash = "sha256:283737e0da3f08bd637b5ad058507e578dd462db259f7f6e4c5c365ba4ee9343"},
-    {file = "greenlet-2.0.2-cp27-cp27mu-manylinux2010_x86_64.whl", hash = "sha256:d27ec7509b9c18b6d73f2f5ede2622441de812e7b1a80bbd446cb0633bd3d5ae"},
-    {file = "greenlet-2.0.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:d967650d3f56af314b72df7089d96cda1083a7fc2da05b375d2bc48c82ab3f3c"},
-    {file = "greenlet-2.0.2-cp310-cp310-macosx_11_0_x86_64.whl", hash = "sha256:30bcf80dda7f15ac77ba5af2b961bdd9dbc77fd4ac6105cee85b0d0a5fcf74df"},
-    {file = "greenlet-2.0.2-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:26fbfce90728d82bc9e6c38ea4d038cba20b7faf8a0ca53a9c07b67318d46088"},
-    {file = "greenlet-2.0.2-cp310-cp310-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:9190f09060ea4debddd24665d6804b995a9c122ef5917ab26e1566dcc712ceeb"},
-    {file = "greenlet-2.0.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:d75209eed723105f9596807495d58d10b3470fa6732dd6756595e89925ce2470"},
-    {file = "greenlet-2.0.2-cp310-cp310-musllinux_1_1_aarch64.whl", hash = "sha256:3a51c9751078733d88e013587b108f1b7a1fb106d402fb390740f002b6f6551a"},
-    {file = "greenlet-2.0.2-cp310-cp310-musllinux_1_1_x86_64.whl", hash = "sha256:76ae285c8104046b3a7f06b42f29c7b73f77683df18c49ab5af7983994c2dd91"},
-    {file = "greenlet-2.0.2-cp310-cp310-win_amd64.whl", hash = "sha256:2d4686f195e32d36b4d7cf2d166857dbd0ee9f3d20ae349b6bf8afc8485b3645"},
-    {file = "greenlet-2.0.2-cp311-cp311-macosx_10_9_universal2.whl", hash = "sha256:c4302695ad8027363e96311df24ee28978162cdcdd2006476c43970b384a244c"},
-    {file = "greenlet-2.0.2-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:d4606a527e30548153be1a9f155f4e283d109ffba663a15856089fb55f933e47"},
-    {file = "greenlet-2.0.2-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:c48f54ef8e05f04d6eff74b8233f6063cb1ed960243eacc474ee73a2ea8573ca"},
-    {file = "greenlet-2.0.2-cp311-cp311-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:a1846f1b999e78e13837c93c778dcfc3365902cfb8d1bdb7dd73ead37059f0d0"},
-    {file = "greenlet-2.0.2-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:3a06ad5312349fec0ab944664b01d26f8d1f05009566339ac6f63f56589bc1a2"},
-    {file = "greenlet-2.0.2-cp311-cp311-musllinux_1_1_aarch64.whl", hash = "sha256:eff4eb9b7eb3e4d0cae3d28c283dc16d9bed6b193c2e1ace3ed86ce48ea8df19"},
-    {file = "greenlet-2.0.2-cp311-cp311-musllinux_1_1_x86_64.whl", hash = "sha256:5454276c07d27a740c5892f4907c86327b632127dd9abec42ee62e12427ff7e3"},
-    {file = "greenlet-2.0.2-cp311-cp311-win_amd64.whl", hash = "sha256:7cafd1208fdbe93b67c7086876f061f660cfddc44f404279c1585bbf3cdc64c5"},
-    {file = "greenlet-2.0.2-cp35-cp35m-macosx_10_14_x86_64.whl", hash = "sha256:910841381caba4f744a44bf81bfd573c94e10b3045ee00de0cbf436fe50673a6"},
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-    {file = "greenlet-2.0.2-cp35-cp35m-win32.whl", hash = "sha256:03a8f4f3430c3b3ff8d10a2a86028c660355ab637cee9333d63d66b56f09d52a"},
-    {file = "greenlet-2.0.2-cp35-cp35m-win_amd64.whl", hash = "sha256:4b58adb399c4d61d912c4c331984d60eb66565175cdf4a34792cd9600f21b394"},
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-    {file = "greenlet-2.0.2-cp36-cp36m-win_amd64.whl", hash = "sha256:9f35ec95538f50292f6d8f2c9c9f8a3c6540bbfec21c9e5b4b751e0a7c20864f"},
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-    {file = "greenlet-2.0.2-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:c9c59a2120b55788e800d82dfa99b9e156ff8f2227f07c5e3012a45a399620b7"},
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-    {file = "greenlet-2.0.2-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:937e9020b514ceedb9c830c55d5c9872abc90f4b5862f89c0887033ae33c6f73"},
-    {file = "greenlet-2.0.2-cp37-cp37m-musllinux_1_1_aarch64.whl", hash = "sha256:36abbf031e1c0f79dd5d596bfaf8e921c41df2bdf54ee1eed921ce1f52999a86"},
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-    {file = "greenlet-2.0.2-cp37-cp37m-win32.whl", hash = "sha256:3f6ea9bd35eb450837a3d80e77b517ea5bc56b4647f5502cd28de13675ee12f7"},
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+    {file = "greenlet-3.1.1-cp39-cp39-musllinux_1_1_x86_64.whl", hash = "sha256:d0028e725ee18175c6e422797c407874da24381ce0690d6b9396c204c7f7276e"},
+    {file = "greenlet-3.1.1-cp39-cp39-win32.whl", hash = "sha256:5e06afd14cbaf9e00899fae69b24a32f2196c19de08fcb9f4779dd4f004e5e7c"},
+    {file = "greenlet-3.1.1-cp39-cp39-win_amd64.whl", hash = "sha256:3319aa75e0e0639bc15ff54ca327e8dc7a6fe404003496e3c6925cd3142e0e22"},
+    {file = "greenlet-3.1.1.tar.gz", hash = "sha256:4ce3ac6cdb6adf7946475d7ef31777c26d94bccc377e070a7986bd2d5c515467"},
 ]
 
 [package.extras]
-docs = ["Sphinx", "docutils (<0.18)"]
+docs = ["Sphinx", "furo"]
 test = ["objgraph", "psutil"]
 
 [[package]]
@@ -1463,7 +1458,6 @@ files = [
 
 [package.dependencies]
 mypy-extensions = ">=1.0.0"
-tomli = {version = ">=1.1.0", markers = "python_version < \"3.11\""}
 typing-extensions = ">=4.6.0"
 
 [package.extras]
@@ -1552,10 +1546,10 @@ requests = ">=2.0.0"
 
 [[package]]
 name = "notifications-utils"
-version = "52.3.9"
+version = "53.0.1"
 description = "Shared python code for Notification - Provides logging utils etc."
 optional = false
-python-versions = "~3.10.9"
+python-versions = "~3.12.7"
 files = []
 develop = false
 
@@ -1580,7 +1574,7 @@ pypdf2 = "1.28.6"
 python-json-logger = "2.0.7"
 pytz = "2021.3"
 PyYAML = "6.0.1"
-requests = "2.31.0"
+requests = "2.32.2"
 smartypants = "2.0.1"
 statsd = "3.3.0"
 werkzeug = "3.0.4"
@@ -1588,8 +1582,8 @@ werkzeug = "3.0.4"
 [package.source]
 type = "git"
 url = "https://github.com/cds-snc/notifier-utils.git"
-reference = "52.3.9"
-resolved_reference = "b344e5a74c79a8fa8ca4f722691850ac0d277959"
+reference = "53.0.1"
+resolved_reference = "8ee66e4ed598a694b778283573715d7d5b9eeb9c"
 
 [[package]]
 name = "openpyxl"
@@ -1918,11 +1912,9 @@ files = [
 
 [package.dependencies]
 colorama = {version = "*", markers = "sys_platform == \"win32\""}
-exceptiongroup = {version = ">=1.0.0rc8", markers = "python_version < \"3.11\""}
 iniconfig = "*"
 packaging = "*"
 pluggy = ">=0.12,<2.0"
-tomli = {version = ">=1.0.0", markers = "python_version < \"3.11\""}
 
 [package.extras]
 testing = ["argcomplete", "attrs (>=19.2.0)", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "setuptools", "xmlschema"]
@@ -2142,13 +2134,13 @@ hiredis = ["hiredis (>=0.1.3)"]
 
 [[package]]
 name = "requests"
-version = "2.31.0"
+version = "2.32.2"
 description = "Python HTTP for Humans."
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 files = [
-    {file = "requests-2.31.0-py3-none-any.whl", hash = "sha256:58cd2187c01e70e6e26505bca751777aa9f2ee0b7f4300988b709f44e013003f"},
-    {file = "requests-2.31.0.tar.gz", hash = "sha256:942c5a758f98d790eaed1a29cb6eefc7ffb0d1cf7af05c3d2791656dbd6ad1e1"},
+    {file = "requests-2.32.2-py3-none-any.whl", hash = "sha256:fc06670dd0ed212426dfeb94fc1b983d917c4f9847c863f313c9dfaaffb7c23c"},
+    {file = "requests-2.32.2.tar.gz", hash = "sha256:dd951ff5ecf3e3b3aa26b40703ba77495dab41da839ae72ef3c8e5d8e2433289"},
 ]
 
 [package.dependencies]
@@ -2757,5 +2749,5 @@ testing = ["coverage (>=5.0.3)", "zope.event", "zope.testing"]
 
 [metadata]
 lock-version = "2.0"
-python-versions = "~3.10.9"
-content-hash = "94c0fc0df7115b07d314521cd48aefc25a5bee81c7b0fa2477a86bb4db3ede81"
+python-versions = "~3.12.7"
+content-hash = "981af1136bc73bbdab78ac127a508c97561d557aa8b3c521de03c3af14ff8c06"
diff --git a/pyproject.toml b/pyproject.toml
index 662a8a46ce..b2680bca2c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ requires = ["poetry-core>=1.7.1"]
 build-backend = "poetry.core.masonry.api"
 
 [tool.poetry.dependencies]
-python = "~3.10.9"
+python = "~3.12.7"
 timeago = "1.0.16"
 Flask = "2.3.3"
 Flask-WTF = "1.2.1"
@@ -43,13 +43,13 @@ user-agents = "2.2.0"
 WTForms = "3.1.2"
 email-validator = "1.3.1"
 Werkzeug = "3.0.4"
-greenlet = "2.0.2"
+greenlet = "3.1.1"
 mixpanel = "4.10.1"
 unidecode = "^1.3.8"
 
 # PaaS
 awscli-cwlogs = "^1.4.6"
-notifications-utils = { git = "https://github.com/cds-snc/notifier-utils.git", tag = "52.3.9" }
+notifications-utils = { git = "https://github.com/cds-snc/notifier-utils.git", tag = "53.0.1"}
 
 
 # Pinned dependencies
diff --git a/tests/app/articles/test_fallback_cache.py b/tests/app/articles/test_fallback_cache.py
index 5baeb9b649..5d91554175 100644
--- a/tests/app/articles/test_fallback_cache.py
+++ b/tests/app/articles/test_fallback_cache.py
@@ -71,5 +71,5 @@ def test_retrieve_existing_from_fallback_cache_on_http_error(app_, mocker):
             get_content(endpoint, {"slug": "mypage", "lang": "en"}, cacheable=True)
 
             assert mock_redis_method.get.called
-            assert mock_redis_method.get.called_with(cache_key)
+            mock_redis_method.get.assert_called_with(cache_key)
             assert mock_redis_method.get(cache_key) == json.dumps(response_json)
diff --git a/tests/app/articles/test_pages.py b/tests/app/articles/test_pages.py
index bc10fba10a..7a62dbb443 100644
--- a/tests/app/articles/test_pages.py
+++ b/tests/app/articles/test_pages.py
@@ -40,7 +40,7 @@ def test_get_page_by_slug_with_cache_retrieve_from_cache(app_, mocker):
 
             assert mock_redis_method.get.called
             assert mock_redis_method.get.call_count == 1
-            assert mock_redis_method.get.called_with(cache_key)
+            mock_redis_method.get.assert_called_with(cache_key)
             assert mock_redis_method.get(cache_key) is not None
 
             assert not request_mock.called
diff --git a/tests/app/main/views/test_dashboard.py b/tests/app/main/views/test_dashboard.py
index a00980bc6c..8d5651cd01 100644
--- a/tests/app/main/views/test_dashboard.py
+++ b/tests/app/main/views/test_dashboard.py
@@ -314,6 +314,7 @@ def test_should_show_monthly_breakdown_of_template_usage(
 def test_anyone_can_see_monthly_breakdown(
     client, api_user_active, service_one, mocker, mock_get_monthly_notification_stats, mock_get_service_statistics
 ):
+    mocker.patch("app.main.views.dashboard.annual_limit_client.get_all_notification_counts", return_value={"data": service_one})
     validate_route_permission_with_client(
         mocker,
         client,
@@ -327,8 +328,9 @@ def test_anyone_can_see_monthly_breakdown(
 
 
 def test_monthly_shows_letters_in_breakdown(
-    client_request, service_one, mock_get_monthly_notification_stats, mock_get_service_statistics
+    client_request, service_one, mocker, mock_get_monthly_notification_stats, mock_get_service_statistics
 ):
+    mocker.patch("app.main.views.dashboard.annual_limit_client.get_all_notification_counts", return_value={"data": service_one})
     page = client_request.get("main.monthly", service_id=service_one["id"])
 
     columns = page.select(".table-field-left-aligned .big-number-label")
@@ -346,8 +348,9 @@ def test_monthly_shows_letters_in_breakdown(
 )
 @freeze_time("2015-01-01 15:15:15.000000")
 def test_stats_pages_show_last_3_years(
-    client_request, endpoint, mock_get_monthly_notification_stats, mock_get_monthly_template_usage, mock_get_service_statistics
+    client_request, endpoint, service_one, mocker, mock_get_monthly_notification_stats, mock_get_monthly_template_usage, mock_get_service_statistics
 ):
+    mocker.patch("app.main.views.dashboard.annual_limit_client.get_all_notification_counts", return_value={"data": service_one})
     page = client_request.get(
         endpoint,
         service_id=SERVICE_ONE_ID,
@@ -359,8 +362,9 @@ def test_stats_pages_show_last_3_years(
 
 
 def test_monthly_has_equal_length_tables(
-    client_request, service_one, mock_get_monthly_notification_stats, mock_get_service_statistics
+    client_request, service_one, mocker, mock_get_monthly_notification_stats, mock_get_service_statistics
 ):
+    mocker.patch("app.main.views.dashboard.annual_limit_client.get_all_notification_counts", return_value={"data": service_one})
     page = client_request.get("main.monthly", service_id=service_one["id"])
 
     assert page.select_one(".table-field-headings th")["style"] == "width: 33%"
diff --git a/tests/app/main/views/test_notifications.py b/tests/app/main/views/test_notifications.py
index a0b3eb690c..16110de5e2 100644
--- a/tests/app/main/views/test_notifications.py
+++ b/tests/app/main/views/test_notifications.py
@@ -814,6 +814,7 @@ def test_notification_page_has_expected_template_link_for_letter(
         assert link is None
 
 
+@pytest.mark.skip(reason="feature not in use")
 def test_should_show_image_of_precompiled_letter_notification(
     logged_in_client,
     fake_uuid,
diff --git a/tests/app/salesforce/test_salesforce_account.py b/tests/app/salesforce/test_salesforce_account.py
index 5f2196ad9a..1348f14e49 100644
--- a/tests/app/salesforce/test_salesforce_account.py
+++ b/tests/app/salesforce/test_salesforce_account.py
@@ -1,3 +1,5 @@
+from unittest.mock import call
+
 from app.salesforce import salesforce_account
 
 
@@ -5,8 +7,8 @@ def test_get_accounts_requests_correct_url(mocker, app_):
     with app_.app_context():
         mock_request = mocker.patch("app.salesforce.salesforce_account.requests.get")
     salesforce_account.get_accounts("www.test_url.ca", "secret_token", app_.logger)
-    assert mock_request.called_with("www.test_url.ca")
-    assert mock_request.called_with(headers={"Authorization": "token secret_token"})
+    calls = [call("www.test_url.ca", headers={"Authorization": "token secret_token"})]
+    mock_request.assert_has_calls(calls)
 
 
 def test_get_accounts_sorts_alphabetically(mocker, app_):