diff --git a/pkgs/development/libraries/physics/lhapdf/default.nix b/pkgs/development/libraries/physics/lhapdf/default.nix
index 19e9f9d9ec86..143f72541b4d 100644
--- a/pkgs/development/libraries/physics/lhapdf/default.nix
+++ b/pkgs/development/libraries/physics/lhapdf/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, python2, makeWrapper }:
+{ lib, stdenv, fetchurl, python, makeWrapper }:
 
 stdenv.mkDerivation rec {
   pname = "lhapdf";
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = [ python2 ];
+  buildInputs = [ python ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 4988effa1769..8bf021899917 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -30211,7 +30211,9 @@ in
 
   herwig = callPackage ../development/libraries/physics/herwig { };
 
-  lhapdf = callPackage ../development/libraries/physics/lhapdf { };
+  lhapdf = callPackage ../development/libraries/physics/lhapdf {
+    python = python3;
+  };
 
   mela = callPackage ../development/libraries/physics/mela { };
 
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 35935450e2a9..c6d4128719f9 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3840,6 +3840,10 @@ in {
 
   lexid = callPackage ../development/python-modules/lexid { };
 
+  lhapdf = toPythonModule (pkgs.lhapdf.override {
+    inherit python;
+  });
+
   libagent = callPackage ../development/python-modules/libagent { };
 
   pa-ringbuffer = callPackage ../development/python-modules/pa-ringbuffer { };