diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 761e881..f6391df 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -48,7 +48,7 @@ jobs:
             playbook: converge.yml
           - distro: ubuntu2204
             playbook: converge.yml
-          - distro: debian12
+          - distro: debian11
             playbook: converge.yml
 
           # Solr 7.
diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
index 74b358d..33a4f13 100644
--- a/molecule/default/converge.yml
+++ b/molecule/default/converge.yml
@@ -16,10 +16,10 @@
           - openjdk-8-jdk
       when: ansible_os_family == "Ubuntu"
 
-    - name: Set Java 17 package for Debian.
+    - name: Set Java 11 package for Debian.
       set_fact:
         java_packages:
-          - openjdk-17-jdk
+          - openjdk-11-jdk
       when: ansible_os_family == "Debian"
 
     - name: Update apt cache.
@@ -30,7 +30,7 @@
     - name: Install dependencies (Debian).
       apt:
         name:
-          - openjdk-17-jre-headless
+          - openjdk-11-jre-headless
           - ca-certificates-java
         state: present
       when: ansible_distribution == "Debian"