diff --git a/Cargo.toml b/Cargo.toml
index ba5c3461..4d47e7d1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -109,6 +109,9 @@ gil-refs = []
 # Optimizes PyObject to Vec conversion and so on.
 nightly = []
 
+# Disables the checks for use in subinterpreters.
+unsafe-allow-subinterpreters = []
+
 # Activates all additional features
 # This is mostly intended for testing purposes - activating *all* of these isn't particularly useful.
 full = [
diff --git a/src/impl_/pymodule.rs b/src/impl_/pymodule.rs
index 9ca80e39..58e2e4dc 100644
--- a/src/impl_/pymodule.rs
+++ b/src/impl_/pymodule.rs
@@ -85,7 +85,7 @@ impl ModuleDef {
         // that static data is not reused across interpreters.
         //
         // PyPy does not have subinterpreters, so no need to check interpreter ID.
-        #[cfg(not(PyPy))]
+        #[cfg(not(any(PyPy, feature = "unsafe-allow-subinterpreters")))]
         {
             // PyInterpreterState_Get is only available on 3.9 and later, but is missing
             // from python3.dll for Windows stable API on 3.9