diff --git a/pkgs/development/libraries/precice/default.nix b/pkgs/development/libraries/precice/default.nix
index 22726858a225..ed46387a2142 100644
--- a/pkgs/development/libraries/precice/default.nix
+++ b/pkgs/development/libraries/precice/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, cmake, gcc, boost, eigen, libxml2, openmpi, python3, python3Packages, petsc }:
+{ lib, stdenv, fetchFromGitHub, cmake, gcc, boost, eigen, libxml2, openmpi, python3, petsc }:
 
 stdenv.mkDerivation rec {
   pname = "precice";
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [ cmake gcc ];
-  buildInputs = [ boost eigen libxml2 openmpi python3 python3Packages.numpy ];
+  buildInputs = [ boost eigen libxml2 openmpi python3 python3.pkgs.numpy ];
   enableParallelBuilding = true;
 
   meta = {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 4a455c9b5e5d..98325008d50c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2351,7 +2351,7 @@ in
 
   psstop = callPackage ../tools/system/psstop { };
 
-  precice = callPackage ../development/libraries/precice { };
+  precice = callPackage ../development/libraries/precice { python3 = python37; };
 
   pueue = callPackage ../applications/misc/pueue { };