diff --git a/pkgs/shells/zsh/oh-my-zsh/default.nix b/pkgs/shells/zsh/oh-my-zsh/default.nix
index 2fce32e018e..8cc9f27494f 100644
--- a/pkgs/shells/zsh/oh-my-zsh/default.nix
+++ b/pkgs/shells/zsh/oh-my-zsh/default.nix
@@ -4,13 +4,13 @@
 { stdenv, fetchgit }:
 
 stdenv.mkDerivation rec {
-  version = "2020-08-24";
+  version = "2020-08-28";
   pname = "oh-my-zsh";
-  rev = "cfb86cd08d3b24fd4b59d0d35b3af1f589c891fa";
+  rev = "4ed6fd2b8b6a0efb2f84f00a64503282aca260e7";
 
   src = fetchgit { inherit rev;
     url = "https://github.com/ohmyzsh/ohmyzsh";
-    sha256 = "0af37smv0bqw37bng2halzgszf8y3m2sxahdff54m16asm0py2cr";
+    sha256 = "0f2f1k6s28lgxpjdgl4s7jisw6dgva9mcsqlsq0wg6041p246nai";
   };
 
   pathsToLink = [ "/share/oh-my-zsh" ];