diff --git a/pkgs/development/tools/build-managers/conan/default.nix b/pkgs/development/tools/build-managers/conan/default.nix
index a72106ace3c4..803476e3f98c 100644
--- a/pkgs/development/tools/build-managers/conan/default.nix
+++ b/pkgs/development/tools/build-managers/conan/default.nix
@@ -25,7 +25,7 @@ let newPython = python3.override {
       version = "1.5.0";
       src = oldAttrs.src.override {
         inherit version;
-        sha256 = "14nz51cqlnxmgfqqilxyvjwwa5xfivdvlm0d0b1qzgcgwdm7an0f";
+        hash = "sha256-Dlh1auOPvY/DAg1UutuOrhfFudy+04ixe7Vbilko35I=";
       };
     });
   };