diff --git a/pkgs/applications/office/ledger/default.nix b/pkgs/applications/office/ledger/default.nix
index 7f543c9bbcc..5478382cbd8 100644
--- a/pkgs/applications/office/ledger/default.nix
+++ b/pkgs/applications/office/ledger/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, cmake, boost, gmp, mpfr, libedit, python
+{ stdenv, lib, fetchFromGitHub, cmake, boost, gmp, mpfr, libedit, python3
 , texinfo, gnused, usePython ? true }:
 
 stdenv.mkDerivation rec {
@@ -15,8 +15,8 @@ stdenv.mkDerivation rec {
   outputs = [ "out" "dev" ];
 
   buildInputs = [
-    (boost.override { enablePython = usePython; })
-    gmp mpfr libedit python gnused
+    (boost.override { enablePython = usePython; python = python3; })
+    gmp mpfr libedit python3 gnused
   ];
 
   nativeBuildInputs = [ cmake texinfo ];
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   # however, that would write to a different nixstore path, pass our own sitePackages location
   prePatch = lib.optionalString usePython ''
     substituteInPlace src/CMakeLists.txt \
-      --replace 'DESTINATION ''${Python_SITEARCH}' 'DESTINATION "${python.sitePackages}"'
+      --replace 'DESTINATION ''${Python_SITEARCH}' 'DESTINATION "${python3.sitePackages}"'
   '';
 
   installTargets = [ "doc" "install" ];