diff --git a/.github/workflows/checkstyle.yaml b/.github/workflows/checkstyle.yaml
index 008adcc03e0b..b0fdc570d473 100644
--- a/.github/workflows/checkstyle.yaml
+++ b/.github/workflows/checkstyle.yaml
@@ -13,8 +13,10 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
-        sudo apt-get -qq upgrade
+        # https://github.com/orgs/community/discussions/47863
+        sudo apt-mark hold grub-efi-amd64-signed
+        sudo apt-get update --fix-missing
+        sudo apt-get upgrade
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/checkstyle-dependencies.txt apt-get install -qq
         sudo python3 -m pip install --quiet flake8
diff --git a/.github/workflows/zfs-tests-functional.yml b/.github/workflows/zfs-tests-functional.yml
index 08ce254ec8ad..237a0cb73d0b 100644
--- a/.github/workflows/zfs-tests-functional.yml
+++ b/.github/workflows/zfs-tests-functional.yml
@@ -17,8 +17,10 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
-        sudo apt-get -qq upgrade
+        # https://github.com/orgs/community/discussions/47863
+        sudo apt-mark hold grub-efi-amd64-signed
+        sudo apt-get update --fix-missing
+        sudo apt-get upgrade
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
         sudo apt-get clean
     - name: Autogen.sh
diff --git a/.github/workflows/zfs-tests-sanity.yml b/.github/workflows/zfs-tests-sanity.yml
index bab8aa175a85..ef2c0a8695a7 100644
--- a/.github/workflows/zfs-tests-sanity.yml
+++ b/.github/workflows/zfs-tests-sanity.yml
@@ -13,8 +13,10 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
-        sudo apt-get -qq upgrade
+        # https://github.com/orgs/community/discussions/47863
+        sudo apt-mark hold grub-efi-amd64-signed
+        sudo apt-get update --fix-missing
+        sudo apt-get upgrade
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
         sudo apt-get clean
     - name: Autogen.sh
diff --git a/.github/workflows/zloop.yml b/.github/workflows/zloop.yml
index 1a234ac99402..8333a88de6e3 100644
--- a/.github/workflows/zloop.yml
+++ b/.github/workflows/zloop.yml
@@ -15,8 +15,10 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
-        sudo apt-get -qq upgrade
+        # https://github.com/orgs/community/discussions/47863
+        sudo apt-mark hold grub-efi-amd64-signed
+        sudo apt-get update --fix-missing
+        sudo apt-get upgrade
         sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
         sudo apt-get clean
     - name: Autogen.sh