diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 6cb95c0..a2340e0 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -17,7 +17,7 @@ jobs:
     steps:
 
       - name: "Checkout"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Add custom GAP root"
         run: ln -f -s $PWD /tmp/gaproot/pkg/
@@ -27,10 +27,10 @@ jobs:
 
       - name: "Validate PackageInfo.g"
         shell: bash
-        run: gap -c "QuitGap(ValidatePackageInfo(\"PackageInfo.g\"));"
+        run: gap -c 'QuitGap(ValidatePackageInfo("PackageInfo.g"));'
 
       - name: "Upload manual"
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: "Manual"
           path: ./doc/manual.pdf
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 94304d1..d4ca85b 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -14,7 +14,7 @@ jobs:
     steps:
     
       - name: "Checkout"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Setup Python"
         uses: actions/setup-python@v6
diff --git a/.github/workflows/pre-release.yml b/.github/workflows/pre-release.yml
index aa753b0..6a05bd4 100644
--- a/.github/workflows/pre-release.yml
+++ b/.github/workflows/pre-release.yml
@@ -48,14 +48,14 @@ jobs:
     steps:
 
       - name: "Checkout"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Add custom GAP root"
         run: ln -f -s $PWD /tmp/gaproot/pkg/
 
-      - name: "Verify that tests do not depend on PrimGrp/SmallGrp/TransGrp"
+      - name: "Verify that tests do not depend on GAPDoc/PrimGrp/SmallGrp/TransGrp"
         shell: bash
-        run: gap --bare -c 'LoadPackage("GAPDoc");TestPackage("SmallClassNr");'
+        run: gap --bare -c 'TestPackage("SmallClassNr");'
 
   lint:
     name: "Run gaplint"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c73a4fe..c5944d7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -29,13 +29,16 @@ jobs:
     name: "Release the GAP package"
     runs-on: ubuntu-latest
 
+    container:
+      image: ghcr.io/stertooy/gda-image:master-full
+
     steps:
 
       - name: "Checkout"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
-      - name: "Setup GAP"
-        uses: gap-actions/setup-gap@v3
+      - name: "Add custom GAP root"
+        run: ln -f -s $PWD /tmp/gaproot/pkg/
 
       - name: "Build manual"
         uses: gap-actions/build-pkg-docs@v2
diff --git a/.github/workflows/test-gap.yml b/.github/workflows/test-gap.yml
index a752a31..33eac4b 100644
--- a/.github/workflows/test-gap.yml
+++ b/.github/workflows/test-gap.yml
@@ -28,7 +28,7 @@ jobs:
     steps:
 
       - name: "Checkout"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Add custom GAP root"
         run: ln -f -s $PWD /tmp/gaproot/pkg/
diff --git a/.github/workflows/test-pkg.yml b/.github/workflows/test-pkg.yml
index d501ebe..7f96686 100644
--- a/.github/workflows/test-pkg.yml
+++ b/.github/workflows/test-pkg.yml
@@ -28,7 +28,7 @@ jobs:
     steps:
 
       - name: "Checkout"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Add custom GAP root"
         run: ln -f -s $PWD /tmp/gaproot/pkg/
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index ac84f07..87e1469 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -15,7 +15,7 @@ jobs:
     steps:
     
       - name: "Checkout"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Validate CITATION.cff"
         uses: citation-file-format/cffconvert-github-action@2.0.0