diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8b3710f..9eb53e2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -22,7 +22,7 @@ jobs:
           install: true
 
       - name: Build Docker image and store in cache
-        uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85
+        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75
         with:
           context: .
           push: false
diff --git a/Dockerfile b/Dockerfile
index aa44647..ff3773c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -38,7 +38,7 @@ FROM mcr.microsoft.com/dotnet/sdk:8.0.201-alpine3.19-amd64 AS runtime
 WORKDIR /opt/test-runner
 
 # Enable rolling forward the .NET SDK used to be backwards-compatible
-ENV DOTNET_ROLL_FORWARD Major
+ENV DOTNET_ROLL_FORWARD=Major
 
 COPY --from=build /root/.nuget/packages/ /root/.nuget/packages/
 COPY --from=build /opt/test-runner/ .