diff --git a/pkgs/development/python-modules/fastjet/default.nix b/pkgs/development/python-modules/fastjet/default.nix
index f1708d02cf81..08b3098d4825 100644
--- a/pkgs/development/python-modules/fastjet/default.nix
+++ b/pkgs/development/python-modules/fastjet/default.nix
@@ -31,13 +31,13 @@ in
 
 buildPythonPackage rec {
   pname = "fastjet";
-  version = "3.4.3.1";
+  version = "3.5.1.1";
   pyproject = true;
 
   src = fetchPypi {
     pname = "fastjet";
     inherit version;
-    hash = "sha256-c9LE3axkm3tJt6RfHHIbJZsA/0s2Cl1UqxGKqKvospI=";
+    hash = "sha256-2GG9A+/2rgYpsJo1tu3BprOM7bKwYVV6/qIIMtYSr9o=";
   };
 
   # unvendor fastjet/fastjet-contrib