diff --git a/.github/workflows/debian11.yml b/.github/workflows/debian13.yml
similarity index 68%
rename from .github/workflows/debian11.yml
rename to .github/workflows/debian13.yml
index ddafd26e2..eb7725679 100644
--- a/.github/workflows/debian11.yml
+++ b/.github/workflows/debian13.yml
@@ -1,11 +1,10 @@
-name: debian bullseye flow
+name: debian trixie flow
 
 on: [workflow_dispatch, workflow_call]
 
 jobs:
-  bullseye:
+  trixie:
     uses: ./.github/workflows/task-unit-test.yml
     with:
-      container: gcc:11-bullseye
+      container: gcc:14-trixie
       pre-checkout-script: apt-get update && apt-get -y install git
-      
diff --git a/.github/workflows/event-merge-to-queue.yml b/.github/workflows/event-merge-to-queue.yml
index d4ef8ab0c..cecf44f35 100644
--- a/.github/workflows/event-merge-to-queue.yml
+++ b/.github/workflows/event-merge-to-queue.yml
@@ -20,8 +20,8 @@ jobs:
 #    uses: ./.github/workflows/task-unit-test.yml
 #    with:
 #      container: ubuntu:bionic
-  bullseye:
-    uses: ./.github/workflows/debian11.yml
+  trixie:
+    uses: ./.github/workflows/debian13.yml
   rocky8:
     uses: ./.github/workflows/rocky8.yml
   rocky9:
@@ -42,7 +42,7 @@ jobs:
       - jammy
 #      - focal
 #      - bionic
-      - bullseye
+      - trixie
       - rocky8
       - rocky9
       - alpine3
diff --git a/.github/workflows/event-nightly.yml b/.github/workflows/event-nightly.yml
index b280468c2..c5583960b 100644
--- a/.github/workflows/event-nightly.yml
+++ b/.github/workflows/event-nightly.yml
@@ -23,8 +23,8 @@ jobs:
   #    uses: ./.github/workflows/task-unit-test.yml
   #    with:
   #      container: ubuntu:bionic
-  bullseye:
-    uses: ./.github/workflows/debian11.yml
+  trixie:
+    uses: ./.github/workflows/debian13.yml
   rocky8:
     uses: ./.github/workflows/rocky8.yml
   rocky9:
@@ -49,7 +49,7 @@ jobs:
       - jammy
 #      - focal
 #      - bionic
-      - bullseye
+      - trixie
       - rocky8
       - rocky9
       - alpine3
diff --git a/.install/debian_gnu_linux_11.sh b/.install/debian_gnu_linux_13.sh
similarity index 100%
rename from .install/debian_gnu_linux_11.sh
rename to .install/debian_gnu_linux_13.sh