diff --git a/pkgs/development/python-modules/boltons/default.nix b/pkgs/development/python-modules/boltons/default.nix
index 655af7c66f2c..b5aa9e6cf033 100644
--- a/pkgs/development/python-modules/boltons/default.nix
+++ b/pkgs/development/python-modules/boltons/default.nix
@@ -2,14 +2,14 @@
 
 buildPythonPackage rec {
   pname = "boltons";
-  version = "2019-01-07";
+  version = "19.1.0";
 
   # No tests in PyPi Tarball
   src = fetchFromGitHub {
     owner = "mahmoud";
     repo = "boltons";
-    rev = "3584ac9399f227a2a11b74153140ee171fd49783";
-    sha256 = "13xngjw249sk4vmr5kqqnia0npw0kpa0gm020a4dqid0cjyvj0rv";
+    rev = version;
+    sha256 = "0b55wly0ksviyl3a4dmih9vzd7bj3p10gr6la4722cs9cx4128q5";
   };
 
   checkInputs = [ pytest ];