diff --git a/stdlib/2.7/random.pyi b/stdlib/2.7/random.pyi
index c817e5d28..e8800c8e5 100644
--- a/stdlib/2.7/random.pyi
+++ b/stdlib/2.7/random.pyi
@@ -44,11 +44,8 @@ class Random(_random.Random):
     def weibullvariate(self, alpha: float, beta: float) -> float: ...
 
 # SystemRandom is not implemented for all OS's; good on Windows & Linux
-class SystemRandom:
-    def __init__(self, randseed: object = ...) -> None: ...
-    def random(self) -> float: ...
-    def getrandbits(self, k: int) -> int: ...
-    def seed(self, x: object = ...) -> None: ...
+class SystemRandom(Random):
+    ...
 
 # ----- random function stubs -----
 def seed(x: object = ...) -> None: ...
diff --git a/stdlib/3/random.pyi b/stdlib/3/random.pyi
index e2cd89547..f40d97320 100644
--- a/stdlib/3/random.pyi
+++ b/stdlib/3/random.pyi
@@ -40,10 +40,7 @@ class Random(_random.Random):
 
 # SystemRandom is not implemented for all OS's; good on Windows & Linux
 class SystemRandom(Random):
-    def __init__(self, randseed: object = ...) -> None: ...
-    def random(self) -> float: ...
-    def getrandbits(self, k: int) -> int: ...
-    def seed(self, arg: object) -> None: ...
+    ...
 
 # ----- random function stubs -----
 def seed(a: Any = ..., version: int = ...) -> None: ...