diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 9f7b699..00f813b 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -56,5 +56,6 @@ jobs:
       - run: "python -mpip cache info"
       - run: "python -mpip freeze"
       - run: "pytest --version"
-      - run: "mypy searvey"
+      - run: "mypy ./observer"
+        if: "(matrix.os == 'ubuntu-latest') && (matrix.python == '3.12' )"
       - run: "make cov"