diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 45a6738f7..1d5d502b0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,6 +16,7 @@ concurrency:
   cancel-in-progress: true
 
 env:
+  PIP_BREAK_SYSTEM_PACKAGES: 1
   PIP_ONLY_BINARY: numpy
   FORCE_COLOR: 3
   PYTEST_TIMEOUT: 300
@@ -455,16 +456,16 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { gcc: 7, std: 11 }
-          - { gcc: 7, std: 17 }
-          - { gcc: 8, std: 14 }
-          - { gcc: 8, std: 17 }
-          - { gcc: 10, std: 17 }
-          - { gcc: 11, std: 20 }
-          - { gcc: 12, std: 20 }
+          - { gcc: 7, std: 11, container_suffix: "" }
+          - { gcc: 7, std: 17, container_suffix: "" }
+          - { gcc: 8, std: 14, container_suffix: "" }
+          - { gcc: 8, std: 17, container_suffix: "" }
+          - { gcc: 10, std: 17, container_suffix: "-bullseye" }
+          - { gcc: 11, std: 20, container_suffix: "" }
+          - { gcc: 12, std: 20, container_suffix: "" }
 
     name: "🐍 3 • GCC ${{ matrix.gcc }} • C++${{ matrix.std }}• x64"
-    container: "gcc:${{ matrix.gcc }}"
+    container: "gcc:${{ matrix.gcc }}${{ matrix.container_suffix }}"
 
     steps:
     - uses: actions/checkout@v3
diff --git a/.github/workflows/configure.yml b/.github/workflows/configure.yml
index 4ae22281c..82a493900 100644
--- a/.github/workflows/configure.yml
+++ b/.github/workflows/configure.yml
@@ -13,6 +13,7 @@ permissions:
   contents: read
 
 env:
+  PIP_BREAK_SYSTEM_PACKAGES: 1
   # For cmake:
   VERBOSE: 1
 
diff --git a/.github/workflows/pip.yml b/.github/workflows/pip.yml
index c1feb6fe1..04d95a28c 100644
--- a/.github/workflows/pip.yml
+++ b/.github/workflows/pip.yml
@@ -16,6 +16,7 @@ permissions:
   contents: read
 
 env:
+  PIP_BREAK_SYSTEM_PACKAGES: 1
   PIP_ONLY_BINARY: numpy
 
 jobs:
diff --git a/.github/workflows/upstream.yml b/.github/workflows/upstream.yml
index d4220be22..dd8a1c960 100644
--- a/.github/workflows/upstream.yml
+++ b/.github/workflows/upstream.yml
@@ -12,6 +12,7 @@ concurrency:
   cancel-in-progress: true
 
 env:
+  PIP_BREAK_SYSTEM_PACKAGES: 1
   PIP_ONLY_BINARY: ":all:"
   # For cmake:
   VERBOSE: 1