diff --git a/pkgs/development/python-modules/pyinstrument/default.nix b/pkgs/development/python-modules/pyinstrument/default.nix
index acff1fba1c98..9dfe3b82cb55 100644
--- a/pkgs/development/python-modules/pyinstrument/default.nix
+++ b/pkgs/development/python-modules/pyinstrument/default.nix
@@ -6,13 +6,13 @@
 
 buildPythonPackage rec {
   pname = "pyinstrument";
-  version = "4.4.0";
+  version = "4.5.0";
 
   src = fetchFromGitHub {
     owner = "joerick";
     repo = pname;
-    rev = "v${version}";
-    hash = "sha256-0GbJkYBgSOIZrHSKM93SW93jXD+ieYN6A01kWoFbyvQ=";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-HvPapa3b9/Wc4ClaMOmCAIeHS7H4V9aCR9JCDol2ElE=";
   };
 
   # Module import recursion