diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 08dcd9c..212450c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -89,7 +89,7 @@ jobs:
       - name: test
         run: |
           uv venv
-          . .venv/Scripts/activate && uv pip install -e . && python -c "import rfc3161_client"
+          . .venv/Scripts/activate && uv pip install -e '.[test]' && pytest --cov=rfc3161_client
           # make test INSTALL_EXTRA=test
         shell: bash
         env:
diff --git a/src/rfc3161_client/__init__.py b/src/rfc3161_client/__init__.py
index 3a76fff..7d8bda0 100644
--- a/src/rfc3161_client/__init__.py
+++ b/src/rfc3161_client/__init__.py
@@ -5,11 +5,18 @@
 from pathlib import Path
 
 def add_missing_dlls():
-    print(f'ADD MISSING DIR {platform.system()}')
+    """Add required DLL search directories for Windows platform.
+
+    This function ensures DLLs can be found by:
+    1. Adding OpenSSL directory from OPENSSL_DIR environment variable (if set)
+    2. Adding Python installation directory
+
+    These directories are only added on Windows platforms. On other platforms,
+    the function returns without making any changes.
+    """
     if platform.system() != "Windows":
         return
 
-    print(f"Adding directories to DLL directory")
     if openssl_dir := os.environ.get("OPENSSL_DIR"):
         os.add_dll_directory(openssl_dir)