diff --git a/.forgejo/workflows/build-document.yml b/.forgejo/workflows/build-document.yml
index 716ca43..8bf9e71 100644
--- a/.forgejo/workflows/build-document.yml
+++ b/.forgejo/workflows/build-document.yml
@@ -28,6 +28,13 @@ jobs:
           tar -xzf "$archive"
           install -m 0755 tectonic "$RUNNER_TEMP/tectonic"
           echo "$RUNNER_TEMP" >> "$GITHUB_PATH"
+      
+    - name: Install Biber
+      shell: bash
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y biber
+        biber --version
 
       - name: Compile document
         shell: bash