diff --git a/.github/workflows/build_cmake.yml b/.github/workflows/build_cmake.yml
index 81e19c91c5..5e6b0bd004 100644
--- a/.github/workflows/build_cmake.yml
+++ b/.github/workflows/build_cmake.yml
@@ -37,9 +37,9 @@ jobs:
           }
         - {
             name: "Ubuntu AppImage", artifact: "Avogadro2.AppImage",
-            os: ubuntu-22.04,
+            os: ubuntu-20.04,
             cc: "gcc", cxx: "g++",
-            build_type: "Release",
+            build_type: "RelWithDebInfo",
             cmake_flags: "-G Ninja -DBUILD_MOLEQUEUE=OFF -DINSTALL_BUNDLE_FILES=ON -USE_SYSTEM_ZLIB=ON",
             cpack: "",
           }
@@ -287,7 +287,7 @@ jobs:
         OPENSSL_ROOT_DIR: ${{ matrix.config.ssl_env }}
 
     - name: AppImage
-      if: matrix.config.os == 'ubuntu-20.04' && matrix.config.build_type == 'Release'
+      if: matrix.config.os == 'ubuntu-20.04' && matrix.config.build_type == 'RelWithDebInfo'
       shell: bash
       run: |
         mkdir appdir