diff --git a/.github/workflows/ci_dbt_core_testing.yml b/.github/workflows/ci_dbt_core_testing.yml
index 9e8d8e95..61789b53 100644
--- a/.github/workflows/ci_dbt_core_testing.yml
+++ b/.github/workflows/ci_dbt_core_testing.yml
@@ -241,7 +241,7 @@ jobs:
         if: runner.os == 'Windows'
         run: |
           python -m venv env
-          source env\bin\activate
+          source env\\bin\\activate
 
       - name: "Set up venv (not windows!)"
         if: runner.os != 'Windows'