diff --git a/.github/workflows/build-appimage-Release.yml b/.github/workflows/build-appimage-Release.yml
index dea88359..dc17a9c9 100644
--- a/.github/workflows/build-appimage-Release.yml
+++ b/.github/workflows/build-appimage-Release.yml
@@ -32,7 +32,11 @@ jobs:
       
     - name: Install Python dependencies
       run: |
-        sudo apt-get update
+        # Third-party apt repos on the runner (Google Chrome, Microsoft)
+        # sometimes serve a hash-mismatched index and abort the refresh.
+        # They are irrelevant here, so a failed refresh must not stop the
+        # build: python3 comes from the Ubuntu repos, which fetch fine.
+        sudo apt-get update || true
         sudo apt-get install -y python3 python3-pip python3-venv
         
     - name: Make build script executable
diff --git a/.github/workflows/build-appimage-beta.yml b/.github/workflows/build-appimage-beta.yml
index 27b67920..c5946c7b 100644
--- a/.github/workflows/build-appimage-beta.yml
+++ b/.github/workflows/build-appimage-beta.yml
@@ -32,7 +32,11 @@ jobs:
       
     - name: Install Python dependencies
       run: |
-        sudo apt-get update
+        # Third-party apt repos on the runner (Google Chrome, Microsoft)
+        # sometimes serve a hash-mismatched index and abort the refresh.
+        # They are irrelevant here, so a failed refresh must not stop the
+        # build: python3 comes from the Ubuntu repos, which fetch fine.
+        sudo apt-get update || true
         sudo apt-get install -y python3 python3-pip python3-venv
         
     - name: Make build script executable
diff --git a/.github/workflows/build-appimage-manual.yml b/.github/workflows/build-appimage-manual.yml
index 8c11c593..fdf0f46c 100644
--- a/.github/workflows/build-appimage-manual.yml
+++ b/.github/workflows/build-appimage-manual.yml
@@ -30,7 +30,11 @@ jobs:
       
     - name: Install Python dependencies
       run: |
-        sudo apt-get update
+        # Third-party apt repos on the runner (Google Chrome, Microsoft)
+        # sometimes serve a hash-mismatched index and abort the refresh.
+        # They are irrelevant here, so a failed refresh must not stop the
+        # build: python3 comes from the Ubuntu repos, which fetch fine.
+        sudo apt-get update || true
         sudo apt-get install -y python3 python3-pip python3-venv
         
     - name: Make build script executable
diff --git a/.github/workflows/build-appimage.yml b/.github/workflows/build-appimage.yml
index 0fa73f0c..019ce870 100644
--- a/.github/workflows/build-appimage.yml
+++ b/.github/workflows/build-appimage.yml
@@ -32,7 +32,11 @@ jobs:
       
     - name: Install Python dependencies
       run: |
-        sudo apt-get update
+        # Third-party apt repos on the runner (Google Chrome, Microsoft)
+        # sometimes serve a hash-mismatched index and abort the refresh.
+        # They are irrelevant here, so a failed refresh must not stop the
+        # build: python3 comes from the Ubuntu repos, which fetch fine.
+        sudo apt-get update || true
         sudo apt-get install -y python3 python3-pip python3-venv
         
     - name: Make build script executable