diff --git a/pkgs/development/python-modules/pyprof2calltree/default.nix b/pkgs/development/python-modules/pyprof2calltree/default.nix
index f86d830635f..7244438c6e0 100644
--- a/pkgs/development/python-modules/pyprof2calltree/default.nix
+++ b/pkgs/development/python-modules/pyprof2calltree/default.nix
@@ -2,7 +2,7 @@
 
 buildPythonPackage rec {
   pname = "pyprof2calltree";
-  version = "1.4.4";
+  version = "1.4.5";
 
   # Fetch from GitHub because the PyPi packaged version does not
   # include all test files.
@@ -10,7 +10,7 @@ buildPythonPackage rec {
     owner = "pwaller";
     repo = "pyprof2calltree";
     rev = "v" + version;
-    sha256 = "1vrip41ib7nmkwa8rjny1na1wyp7nvvgvm0h9bd21i262kbm4nqx";
+    sha256 = "0akighssiswfhi5285rrj37am6flg3ip17c34bayq3r8yyk1iciy";
   };
 
   meta = with lib; {