diff --git a/pkgs/by-name/fi/fittrackee/package.nix b/pkgs/by-name/fi/fittrackee/package.nix
index 23a2268c78d6..f21da61f969f 100644
--- a/pkgs/by-name/fi/fittrackee/package.nix
+++ b/pkgs/by-name/fi/fittrackee/package.nix
@@ -37,11 +37,6 @@ python.pkgs.buildPythonApplication rec {
     hash = "sha256-lTDS+HfYG6ayXDotu7M2LUrw+1ZhQ0ftw0rTn4Mr3rQ=";
   };
 
-  postPatch = ''
-    substituteInPlace pyproject.toml \
-      --replace-fail psycopg2-binary psycopg2
-  '';
-
   build-system = [
     python.pkgs.poetry-core
   ];
@@ -70,7 +65,7 @@ python.pkgs.buildPythonApplication rec {
       gpxpy
       gunicorn
       humanize
-      psycopg2
+      psycopg2-binary
       pyjwt
       pyopenssl
       pytz