diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0d20f17..8dd6346 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -53,7 +53,7 @@ jobs:
       - name: Install the Jenkins Job Builder
         run: |
           pip install --user --upgrade jinja2
-          pip install --user jenkins-job-builder
+          pip install --user jenkins-job-builder==4.3.0
       - name: Check it can generate all jobs
         run: |
           cd jobs-builder
diff --git a/.github/workflows/publish_jobs.yml b/.github/workflows/publish_jobs.yml
index 7c71b35..c4713c4 100644
--- a/.github/workflows/publish_jobs.yml
+++ b/.github/workflows/publish_jobs.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Install the Jenkins Job Builder
         run: |
           pip install --user --upgrade jinja2
-          pip install --user jenkins-job-builder
+          pip install --user jenkins-job-builder==4.3.0
       - name: Run the publish script
         env:
           JENKINS_USER: ${{ secrets.JENKINS_USER }}