diff --git a/pkgs/development/python-modules/boltons/default.nix b/pkgs/development/python-modules/boltons/default.nix
index 8b7139f5a62..6470b7da859 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 = "19.3.0";
+  version = "20.0.0";
 
   # No tests in PyPi Tarball
   src = fetchFromGitHub {
     owner = "mahmoud";
     repo = "boltons";
     rev = version;
-    sha256 = "0pgqr2hf7lxag8nc8wnh8hpp8fd2lxccq9h0bb8lb9x8npnzhnbn";
+    sha256 = "0scdslqi28b899i42m4c9pvhwv3kkw4wpi3n9zm5n64ggn5ngfbz";
   };
 
   checkInputs = [ pytest ];