diff --git a/.github/workflows/validation.yml b/.github/workflows/validation.yml
index 4570b42..17743aa 100644
--- a/.github/workflows/validation.yml
+++ b/.github/workflows/validation.yml
@@ -23,7 +23,7 @@ jobs:
         python-version: 3.11
 
     - name: Install requirements
-      run: pip install -r requirements.txt
+      run: pip install nomenclature-iamc
 
     - name: Run the nomenclature project validation
       run: nomenclature validate-project .