diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8e53232..c4c3b13 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -85,7 +85,7 @@ jobs:
         id: cache-container-image
         uses: actions/cache@v4
         with:
-          key: v3-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
+          key: v4-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
           path: |
             share/container.tar.gz
             share/image-id.txt
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ec06d0b..8f3416f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -59,7 +59,7 @@ jobs:
         id: cache-container-image
         uses: actions/cache@v4
         with:
-          key: v3-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
+          key: v4-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
           path: |-
             share/container.tar.gz
             share/image-id.txt
@@ -226,7 +226,7 @@ jobs:
       - name: Restore container cache
         uses: actions/cache/restore@v4
         with:
-          key: v3-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
+          key: v4-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
           path: |-
             share/container.tar.gz
             share/image-id.txt
@@ -333,7 +333,7 @@ jobs:
       - name: Restore container image
         uses: actions/cache/restore@v4
         with:
-          key: v3-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
+          key: v4-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
           path: |-
             share/container.tar.gz
             share/image-id.txt
@@ -428,7 +428,7 @@ jobs:
       - name: Restore container image
         uses: actions/cache/restore@v4
         with:
-          key: v3-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
+          key: v4-${{ steps.date.outputs.date }}-${{ hashFiles('Dockerfile', 'dangerzone/conversion/*.py', 'dangerzone/container/*', 'install/common/build-image.py') }}
           path: |-
             share/container.tar.gz
             share/image-id.txt