diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index b82b6ba..5715b26 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -1852,6 +1852,7 @@
     "Base class for warnings about Unicode related problems, mostly\n"
     "related to conversion problems.");
 
+
 /*
  *    BytesWarning extends Warning
  */
@@ -1860,6 +1861,13 @@
     "related to conversion from str or comparing to str.");
 
 
+/*
+ *    ResourceWarning extends Warning
+ */
+SimpleExtendsException(PyExc_Warning, ResourceWarning,
+    "Base class for warnings about resource usage.");
+
+
 
 /* Pre-computed MemoryError instance.  Best to create this as early as
  * possible and not wait until a MemoryError is actually raised!
@@ -1939,6 +1947,7 @@
     PRE_INIT(ImportWarning)
     PRE_INIT(UnicodeWarning)
     PRE_INIT(BytesWarning)
+    PRE_INIT(ResourceWarning)
 
     bltinmod = PyImport_ImportModule("builtins");
     if (bltinmod == NULL)
@@ -2001,6 +2010,7 @@
     POST_INIT(ImportWarning)
     POST_INIT(UnicodeWarning)
     POST_INIT(BytesWarning)
+    POST_INIT(ResourceWarning)
 
     PyExc_MemoryErrorInst = BaseException_new(&_PyExc_MemoryError, NULL, NULL);
     if (!PyExc_MemoryErrorInst)