diff --git a/crates/ty_python_semantic/mdtest.py b/crates/ty_python_semantic/mdtest.py
index c0795ed50c..8eb272f39d 100644
--- a/crates/ty_python_semantic/mdtest.py
+++ b/crates/ty_python_semantic/mdtest.py
@@ -106,7 +106,12 @@ class MDTestRunner:
         return subprocess.run(
             [self.mdtest_executable, *arguments],
             cwd=CRATE_ROOT,
-            env=dict(os.environ, CLICOLOR_FORCE="1"),
+            env=dict(
+                os.environ,
+                CLICOLOR_FORCE="1",
+                INSTA_FORCE_PASS="1",
+                INSTA_OUTPUT="none",
+            ),
             capture_output=capture_output,
             text=True,
             check=False,