diff --git a/pkgs/shells/zsh/oh-my-zsh/default.nix b/pkgs/shells/zsh/oh-my-zsh/default.nix
index d0f3fc88fc09..fa92411cea69 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 = "2019-07-22";
+  version = "2019-07-31";
   name = "oh-my-zsh-${version}";
-  rev = "508cba2fc2ec545504abcf38ecdd958f3a89e5e8";
+  rev = "6d2221e697ea4a2445202b1c32283610f84585ef";
 
   src = fetchgit { inherit rev;
     url = "https://github.com/robbyrussell/oh-my-zsh";
-    sha256 = "0pql5p8dwz576s0hgqrzk4543qawlghy7rv3k3jyhrwi4xx4z84d";
+    sha256 = "0yj2cymh2a74014ng7vyfh1b8qhbk14s0sbcj0426mykvilfd31b";
   };
 
   pathsToLink = [ "/share/oh-my-zsh" ];