diff --git a/pkgs/by-name/cp/cp2k/package.nix b/pkgs/by-name/cp/cp2k/package.nix
index 45022b18c10c..42775a325526 100644
--- a/pkgs/by-name/cp/cp2k/package.nix
+++ b/pkgs/by-name/cp/cp2k/package.nix
@@ -133,6 +133,9 @@ stdenv.mkDerivation (finalAttrs: {
   pname = "cp2k";
   version = "2026.1-unstable-2026-06-16";
 
+  strictDeps = true;
+  __structuredAttrs = true;
+
   src = fetchFromGitHub {
     owner = "cp2k";
     repo = "cp2k";
@@ -157,6 +160,7 @@ stdenv.mkDerivation (finalAttrs: {
     makeWrapper
     pkg-config
     gfortran
+    mpi
   ]
   ++ lib.optionals (gpuBackend == "cuda") [
     cudaPackages.cuda_nvcc