diff --git a/.github/workflows/unit_tests.yaml b/.github/workflows/unit_tests.yaml
index 02dd091..e4143f8 100644
--- a/.github/workflows/unit_tests.yaml
+++ b/.github/workflows/unit_tests.yaml
@@ -27,6 +27,7 @@ jobs:
         cd src/ 
         pip install -e .
         pip install toml
+        pip install lark
 
     - name: (asm.py) Codeline Test Cases
       run: |
@@ -71,4 +72,4 @@ jobs:
     - name: (config.py) All Test Cases
       run: |
         cd src/unit_tests
-        python3 -m unittest test_config
\ No newline at end of file
+        python3 -m unittest test_config