diff --git a/.github/workflows/codspeed.yml b/.github/workflows/codspeed.yml
index 17c1c50..5cd4a2f 100644
--- a/.github/workflows/codspeed.yml
+++ b/.github/workflows/codspeed.yml
@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
 
 env:
-  PYTHON_VERSION: "3.14.2"
+  PYTHON_VERSION: "3.14.3"
   SHARDS: 4
 
 permissions:
diff --git a/src/pytest_codspeed/instruments/hooks/__init__.py b/src/pytest_codspeed/instruments/hooks/__init__.py
index d0d60bf..70e8206 100644
--- a/src/pytest_codspeed/instruments/hooks/__init__.py
+++ b/src/pytest_codspeed/instruments/hooks/__init__.py
@@ -37,7 +37,7 @@ def __init__(self) -> None:
         if self.instance == 0:
             raise RuntimeError("Failed to initialize CodSpeed instrumentation library.")
 
-        if SUPPORTS_PERF_TRAMPOLINE:
+        if SUPPORTS_PERF_TRAMPOLINE and not sys.is_stack_trampoline_active():
             sys.activate_stack_trampoline("perf")  # type: ignore
 
     def __del__(self):