diff --git a/.github/actions/verify-dotnet-consolidation/action.yml b/.github/actions/verify-dotnet-consolidation/action.yml
new file mode 100644
index 000000000..1ae2af42d
--- /dev/null
+++ b/.github/actions/verify-dotnet-consolidation/action.yml
@@ -0,0 +1,27 @@
+name: Verify that .NET packages are consolidated
+description: >
+  Verifies that the NuGet packages of a .NET solution are consolidated, i.e. the same version of a given package is used
+  in all projects.
+
+inputs:
+  directory:
+    required: false
+    default: .
+    description: Path to the directory where a solution file can be found.
+  solution-path:
+    required: false
+    default: "*.sln"
+    description: >
+      The path of the solution file to be processed. The value is given to PowerShell's `Get-ChildItem` cmdlet as-is, so
+      grepping is still possible but a name with spaces must be escaped separately.
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup
+      shell: pwsh
+      run: dotnet tool install dotnet-consolidate --global --version 2.0.0
+    - name: Verify consolidation status
+      shell: pwsh
+      working-directory: ${{ inputs.directory }}
+      run: dotnet consolidate -s (Get-ChildItem ${{ inputs.solution-path }}).FullName
diff --git a/.github/workflows/build-and-test-orchard-core.yml b/.github/workflows/build-and-test-orchard-core.yml
index 356786833..ecce33e52 100644
--- a/.github/workflows/build-and-test-orchard-core.yml
+++ b/.github/workflows/build-and-test-orchard-core.yml
@@ -68,6 +68,13 @@ on:
         type: number
         default: 360
         description: Configuration for the timeout-minutes parameter of the workflow. The 360 is GitHub's default.
+      verify-dotnet-consolidation:
+        required: false
+        type: boolean
+        default: true
+        description:  >
+          When set to true, it will be verified whether the NuGet packages of the .NET solution are consolidated, i.e.
+          the same version of a given package is used in all projects.
 
 jobs:
   build-and-test:
@@ -91,6 +98,12 @@ jobs:
       with:
         dotnet-version: ${{ inputs.dotnet-version }}
 
+    - name: Verify that .NET packages are consolidated
+      if: ${{ inputs.verify-dotnet-consolidation }}
+      uses: Lombiq/GitHub-Actions/.github/actions/verify-dotnet-consolidation@issue/OSOE-172
+      with:
+        directory: ${{ inputs.build-directory }}
+
     - name: Enable Node corepack
       uses: Lombiq/GitHub-Actions/.github/actions/enable-corepack@dev
 
diff --git a/.github/workflows/build-dotnet.yml b/.github/workflows/build-dotnet.yml
index 7ea6bbc10..357d0d9ec 100644
--- a/.github/workflows/build-dotnet.yml
+++ b/.github/workflows/build-dotnet.yml
@@ -1,4 +1,4 @@
-name: Build .NET solution
+name: Build .NET solution
 
 on:
   workflow_call:
@@ -59,6 +59,13 @@ on:
         type: number
         default: 360
         description: Configuration for the timeout-minutes parameter of the workflow. The 360 is GitHub's default.
+      verify-dotnet-consolidation:
+        required: false
+        type: boolean
+        default: true
+        description:  >
+          When set to true, it will be verified whether the NuGet packages of the .NET solution are consolidated, i.e.
+          the same version of a given package is used in all projects.
 
 jobs:
   # While the below steps seem suitable to DRY with build-and-test-orchard-core, since reusable workflows can't call
@@ -85,6 +92,12 @@ jobs:
       with:
         dotnet-version: ${{ inputs.dotnet-version }}
 
+    - name: Verify that .NET packages are consolidated
+      if: ${{ inputs.verify-dotnet-consolidation }}
+      uses: Lombiq/GitHub-Actions/.github/actions/verify-dotnet-consolidation@issue/OSOE-172
+      with:
+        directory: ${{ inputs.build-directory }}
+
     - name: Build and Static Code Analysis
       uses: Lombiq/GitHub-Actions/.github/actions/build-dotnet@dev
       with:
diff --git a/Docs/Actions.md b/Docs/Actions.md
index 8f188cadd..3346dd0e2 100644
--- a/Docs/Actions.md
+++ b/Docs/Actions.md
@@ -11,4 +11,5 @@ In addition to the below short explanations, check out the inline documentation
 - `setup-dotnet`: Sets up the .NET SDK.
 - `setup-sql-server`: Sets up SQL Server with Lombiq-recommended defaults.
 - `test-dotnet`: Runs .NET unit and UI tests (with the [Lombiq UI Testing Toolbox for Orchard Core](https://github.com/Lombiq/UI-Testing-Toolbox)), generates a test report, and uploads UI testing failure dumps to artifacts.
+- `verify-dotnet-consolidation`: Verifies that the NuGet packages of a .NET solution are consolidated, i.e. the same version of a given package is used in all projects.
 - `verify-submodule-pull-request`: Assuming that the current repository is a submodule in another repository, this action verifies that a pull request with a matching issue code has been opened there as well.