diff --git a/stdlib/2and3/pprint.pyi b/stdlib/2and3/pprint.pyi
index 35da3a3e9..90a87ab0f 100644
--- a/stdlib/2and3/pprint.pyi
+++ b/stdlib/2and3/pprint.pyi
@@ -3,19 +3,35 @@
 # Based on http://docs.python.org/2/library/pprint.html
 # Based on http://docs.python.org/3/library/pprint.html
 
+import sys
 from typing import Any, Dict, Tuple, IO
 
-def pformat(o: object, indent: int = ..., width: int = ...,
-            depth: int = ...) -> str: ...
-def pprint(o: object, stream: IO[str] = ..., indent: int = ..., width: int = ...,
-           depth: int = ...) -> None: ...
+if sys.version_info >= (3, 4):
+    def pformat(o: object, indent: int = ..., width: int = ...,
+                depth: int = ..., compact: bool = ...) -> str: ...
+else:
+    def pformat(o: object, indent: int = ..., width: int = ...,
+                depth: int = ...) -> str: ...
+
+if sys.version_info >= (3, 4):
+    def pprint(o: object, stream: IO[str] = ..., indent: int = ..., width: int = ...,
+               depth: int = ..., compact: bool = ...) -> None: ...
+else:
+    def pprint(o: object, stream: IO[str] = ..., indent: int = ..., width: int = ...,
+               depth: int = ...) -> None: ...
+
 def isreadable(o: object) -> bool: ...
 def isrecursive(o: object) -> bool: ...
 def saferepr(o: object) -> str: ...
 
 class PrettyPrinter:
-    def __init__(self, indent: int = ..., width: int = ..., depth: int = ...,
-                 stream: IO[str] = ...) -> None: ...
+    if sys.version_info >= (3, 4):
+        def __init__(self, indent: int = ..., width: int = ..., depth: int = ...,
+                     stream: IO[str] = ..., compact: bool = ...) -> None: ...
+    else:
+        def __init__(self, indent: int = ..., width: int = ..., depth: int = ...,
+                     stream: IO[str] = ...) -> None: ...
+
     def pformat(self, o: object) -> str: ...
     def pprint(self, o: object) -> None: ...
     def isreadable(self, o: object) -> bool: ...