diff --git a/.github/workflows/run-on-arch.yml b/.github/workflows/run-on-arch.yml
index 4060da78d..a09dbe510 100644
--- a/.github/workflows/run-on-arch.yml
+++ b/.github/workflows/run-on-arch.yml
@@ -3,7 +3,7 @@ on: [push, pull_request]
 jobs:
   build_job:
     # The host should always be linux
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     name: Build on ${{ matrix.distro }} ${{ matrix.arch }}
 
     # Run steps on Bullseye=Debian 11
@@ -11,7 +11,7 @@ jobs:
       matrix:
         include:
           - arch: aarch64
-            distro: bullseye
+            distro: ubuntu20.04
 
     steps:
       - uses: actions/checkout@v4
@@ -29,17 +29,15 @@ jobs:
           env: |
             CMAKE_GENERATOR: Ninja
 
-          shell: /bin/bash
-
           install: |
             case "${{ matrix.distro }}" in
               ubuntu*|jessie|stretch|buster|bullseye)
                 apt-get update -q -y
-                apt-get install -q -y cmake gcc g++ git libssl-dev ninja-build valgrind
+                apt-get install -q -y cmake gcc g++ libssl-dev ninja-build
                 ;;
             esac
 
           run: |
             cmake -B build -DCMAKE_C_FLAGS="-Werror"
             cmake --build build -j -t retest
-            valgrind --leak-check=full --show-reachable=yes --error-exitcode=42 ./build/test/retest -r -v
+            ./build/test/retest -r -v