diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 75d799fe1..95595924a 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Install deps
-      run: sudo apt-get install bison flex libreadline-dev tcl-dev libffi-dev
+      run: sudo apt-get install bison flex libfl-dev libreadline-dev tcl-dev libffi-dev
 
     - name: Checkout repository
       uses: actions/checkout@v4