diff --git a/runtime/monotouch-main.m b/runtime/monotouch-main.m
index d0c0a2d55abe..0a9a0c2cc46f 100644
--- a/runtime/monotouch-main.m
+++ b/runtime/monotouch-main.m
@@ -495,6 +495,8 @@ - (void) memoryWarning: (NSNotification *) sender
 
 	xamarin_mono_object_release (&assembly);
 	
+	xamarin_release_static_dictionaries ();
+
 	xamarin_bridge_shutdown ();
 
 	return rv;
diff --git a/runtime/runtime.m b/runtime/runtime.m
index 0163bbdaf5dd..c7728faebd63 100644
--- a/runtime/runtime.m
+++ b/runtime/runtime.m
@@ -2070,6 +2070,22 @@ -(void) xamarinSetFlags: (enum XamarinGCHandleFlags) flags;
 	return rv;
 }
 
+void
+xamarin_release_static_dictionaries ()
+{
+#if defined (CORECLR_RUNTIME)
+	// Release static dictionaries of cached objects. If we end up trying to
+	// add objects to these dictionaries after this point (on a background
+	// thread), the dictionaries will be re-created (and leak) - which
+	// shouldn't be a problem, because at this point the process is about to
+	// exit anyway.
+	pthread_mutex_lock (&wrapper_hash_lock);
+	xamarin_mono_object_release (&block_wrapper_queue);
+	xamarin_mono_object_release (&xamarin_wrapper_hash);
+	pthread_mutex_unlock (&wrapper_hash_lock);
+#endif
+}
+
 void
 xamarin_set_use_sgen (bool value)
 {
diff --git a/runtime/xamarin/runtime.h b/runtime/xamarin/runtime.h
index a67df5d83ed6..8b1fd409223a 100644
--- a/runtime/xamarin/runtime.h
+++ b/runtime/xamarin/runtime.h
@@ -230,6 +230,7 @@ bool			xamarin_set_gchandle_with_flags_safe (id self, GCHandle gchandle, enum Xa
 void			xamarin_create_gchandle (id self, void *managed_object, enum XamarinGCHandleFlags flags, bool force_weak);
 void            xamarin_release_managed_ref (id self, bool user_type);
 void			xamarin_notify_dealloc (id self, GCHandle gchandle);
+void			xamarin_release_static_dictionaries ();
 
 int				xamarin_main (int argc, char *argv[], enum XamarinLaunchMode launch_mode);