diff --git a/Dockerfile b/Dockerfile
index 97409db..c78fcf1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,7 @@ WORKDIR /opt
 COPY setup.py /opt/
 COPY requirements.txt /opt/
 COPY pgbedrock /opt/pgbedrock
+RUN pip install "cython<3.0.0" && pip install --no-build-isolation pyyaml==5.4.1
 RUN pip install -r requirements.txt
 RUN pip install .
 RUN pip install --force-reinstall psycopg2
diff --git a/requirements.txt b/requirements.txt
index 5d514d9..410b9f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 Cerberus==1.1
 click==6.7
-Jinja2==2.10.1
-MarkupSafe==1.1.1
+Jinja2==3.1.4
+MarkupSafe==2.1.5
 psycopg2==2.7.3
-PyYAML==5.4
+PyYAML==5.4.1