diff --git a/nix/sources.json b/nix/sources.json
index 2bc5090..08b8e62 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -24,15 +24,15 @@
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "powerline-hs": {
-        "branch": "master",
+        "branch": "v0.1.3.0",
         "description": "A lightning fast reimplementation of the Powerline prompt generator in Haskell.",
         "homepage": "",
         "owner": "rdnetto",
         "repo": "powerline-hs",
-        "rev": "91edd4518b619c8ef90b36332fe08ebf9be050a7",
-        "sha256": "0mxdafhk75k2ayb6kc73jgqnsvqnbrd39mky8gvdsw33psap6c6l",
+        "rev": "4253967d37fb544abaaae6b8b3e4e22bc6445135",
+        "sha256": "0lr6qcms8pqhbg1ig8a2f1zzhmg3wls86afzpk7y2hbpmlwhisbj",
         "type": "tarball",
-        "url": "https://github.com/rdnetto/powerline-hs/archive/91edd4518b619c8ef90b36332fe08ebf9be050a7.tar.gz",
+        "url": "https://github.com/rdnetto/powerline-hs/archive/4253967d37fb544abaaae6b8b3e4e22bc6445135.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }