diff --git a/tests/configs/runtimeConfigDarwin.json b/tests/configs/runtimeConfigDarwin.json
index fb92479..ca38816 100644
--- a/tests/configs/runtimeConfigDarwin.json
+++ b/tests/configs/runtimeConfigDarwin.json
@@ -4,7 +4,7 @@
     "gcc": "/usr/bin/gcc"
   },
   "runtimes": {
-    "gcc": "../lib/libfib.dynlib"
+    "gcc": "../lib/libfib.dylib"
   },
   "toolchains": {
     "clang-runtime": [
diff --git a/tests/scripts/Grader.py b/tests/scripts/grading-scripts/tournament.py
similarity index 100%
rename from tests/scripts/Grader.py
rename to tests/scripts/grading-scripts/tournament.py
diff --git a/tests/test_runtime.py b/tests/test_runtime.py
index 29a8b76..25ef36e 100644
--- a/tests/test_runtime.py
+++ b/tests/test_runtime.py
@@ -29,7 +29,7 @@ def test_gcc_toolchain_success(config_factory, cli_factory):
     assert os.path.exists(COMPILE_LIB_SCRIPT), "missing library compiler script" 
 
     if sys.platform == "darwin":
-        lib = "libfib.dynlib"
+        lib = "libfib.dylib"
         config = config_factory("runtimeConfigDarwin.json")
     else:
         lib = "libfib.so"