diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index f34e6be1..6cc08025 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -34,7 +34,7 @@ jobs:
         linux_distro:
         - Alpine Linux 3.21  # with musl
         - CentOS 8.2         # with GCC 8.5.0
-        # - Debian Buster with GCC 9.2  # stock buster has GCC 8.3 - temporarily disabled
+        - Debian Bullseye with GCC 9.5  # stock bullseye has GCC 10.2
         - Ubuntu 22.04       # because super popular
         - Ubuntu 25.04       # because GCC 15+
 
diff --git a/scripts/docker/build_on_debian_buster_with_gcc_9_2.Dockerfile b/scripts/docker/build_on_debian_bullseye_with_gcc_9_5.Dockerfile
similarity index 95%
rename from scripts/docker/build_on_debian_buster_with_gcc_9_2.Dockerfile
rename to scripts/docker/build_on_debian_bullseye_with_gcc_9_5.Dockerfile
index 802a3f05..d1d2fb27 100644
--- a/scripts/docker/build_on_debian_buster_with_gcc_9_2.Dockerfile
+++ b/scripts/docker/build_on_debian_bullseye_with_gcc_9_5.Dockerfile
@@ -14,7 +14,7 @@
 ## You should have received a copy of the GNU General Public License
 ## along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-FROM gcc:9.2
+FROM gcc:9.5-bullseye
 SHELL ["/bin/bash", "-c"]
 RUN head -n1 /etc/os-release \
         && \
@@ -50,9 +50,9 @@ RUN head -n1 /etc/os-release \
             xsltproc
 RUN set -x \
         && \
-    [[ "$(gcc -dumpversion) == 9.2.* ]] \
+    [[ "$(gcc -dumpversion) == 9.5.* ]] \
         && \
-    [[ "$(g++ -dumpversion) == 9.2.* ]]
+    [[ "$(g++ -dumpversion) == 9.5.* ]]
 ADD usbguard.tar usbguard/
 ADD catch.tar usbguard/src/ThirdParty/Catch/
 WORKDIR usbguard