diff --git a/.github/workflows/test-fedora-install.yml b/.github/workflows/test-fedora-install.yml
index 1a828fe0..816efd9a 100644
--- a/.github/workflows/test-fedora-install.yml
+++ b/.github/workflows/test-fedora-install.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Test on Fedora 43
     container:
-      image: fedora:43 # renovate: datasource=docker depName=fedora
+      image: fedora:43@sha256:781b7642e8bf256e9cf75d2aa58d86f5cc695fd2df113517614e181a5eee9138 # renovate: datasource=docker depName=fedora
       options: --user root
     steps:
       - name: Install prerequisites
diff --git a/.github/workflows/test-unit-fedora.yml b/.github/workflows/test-unit-fedora.yml
index 08669fda..f491ae51 100644
--- a/.github/workflows/test-unit-fedora.yml
+++ b/.github/workflows/test-unit-fedora.yml
@@ -29,7 +29,7 @@ jobs:
   test-fedora:
     runs-on: ubuntu-24.04
     container:
-      image: fedora:43 # renovate: datasource=docker depName=fedora
+      image: fedora:43@sha256:781b7642e8bf256e9cf75d2aa58d86f5cc695fd2df113517614e181a5eee9138 # renovate: datasource=docker depName=fedora
     steps:
       - name: Install prerequisites
         run: |