diff --git a/src/_imaging.c b/src/_imaging.c
index ddc8d2885..03e10e547 100644
--- a/src/_imaging.c
+++ b/src/_imaging.c
@@ -4448,5 +4448,9 @@ PyInit__imaging(void) {
         return NULL;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingcms.c b/src/_imagingcms.c
index 590e1b983..628662b30 100644
--- a/src/_imagingcms.c
+++ b/src/_imagingcms.c
@@ -1538,5 +1538,9 @@ PyInit__imagingcms(void) {
 
     PyDateTime_IMPORT;
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingft.c b/src/_imagingft.c
index ba36cc72c..1bef876e1 100644
--- a/src/_imagingft.c
+++ b/src/_imagingft.c
@@ -1576,5 +1576,9 @@ PyInit__imagingft(void) {
         return NULL;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingmath.c b/src/_imagingmath.c
index 067c165b2..a2ddc91b9 100644
--- a/src/_imagingmath.c
+++ b/src/_imagingmath.c
@@ -290,5 +290,9 @@ PyInit__imagingmath(void) {
         return NULL;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingmorph.c b/src/_imagingmorph.c
index 8815c2b7e..a95ce75bf 100644
--- a/src/_imagingmorph.c
+++ b/src/_imagingmorph.c
@@ -269,5 +269,9 @@ PyInit__imagingmorph(void) {
 
     m = PyModule_Create(&module_def);
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_imagingtk.c b/src/_imagingtk.c
index efa7fc1b6..c70d044bb 100644
--- a/src/_imagingtk.c
+++ b/src/_imagingtk.c
@@ -62,5 +62,10 @@ PyInit__imagingtk(void) {
         Py_DECREF(m);
         return NULL;
     }
+
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }
diff --git a/src/_webp.c b/src/_webp.c
index 0a70e3357..dfa24da41 100644
--- a/src/_webp.c
+++ b/src/_webp.c
@@ -1005,5 +1005,9 @@ PyInit__webp(void) {
         return NULL;
     }
 
+#ifdef Py_GIL_DISABLED
+    PyUnstable_Module_SetGIL(m, Py_MOD_GIL_NOT_USED);
+#endif
+
     return m;
 }