diff --git a/Misc/NEWS b/Misc/NEWS
index 1287d2d..40a4495 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,8 @@
 Core and Builtins
 -----------------
 
+- Issue #13908: Ready types returned from PyType_FromSpec.
+
 - Issue #11235: Fix OverflowError when trying to import a source file whose
   modification time doesn't fit in a 32-bit timestamp.
 
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index e2316bd..c3822ab 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -2386,6 +2386,9 @@
         }
     }
 
+    if (PyType_Ready(&res->ht_type) < 0)
+        goto fail;
+
     return (PyObject*)res;
 
  fail: