diff --git a/pkgs/development/python-modules/chevron/default.nix b/pkgs/development/python-modules/chevron/default.nix
index 3a178e38c786..999101057b2a 100644
--- a/pkgs/development/python-modules/chevron/default.nix
+++ b/pkgs/development/python-modules/chevron/default.nix
@@ -7,15 +7,15 @@
 
 buildPythonPackage {
   pname = "chevron";
-  version = "0.13.1";
+  version = "0.14.0-unstable-2021-03-21";
   format = "setuptools";
 
   # No tests available in the PyPI tarball
   src = fetchFromGitHub {
     owner = "noahmorrison";
     repo = "chevron";
-    rev = "0.13.1";
-    sha256 = "0l1ik8dvi6bgyb3ym0w4ii9dh25nzy0x4yawf4zbcyvvcb6af470";
+    rev = "5e1c12827b7fc3db30cb3b24cae9a7ee3092822b";
+    sha256 = "sha256-44cxkliJJ+IozmhS4ekbb+pCa7tcUuX9tRNYTK0mC+w=";
   };
 
   checkPhase = ''