diff --git a/projects/assimp.org/package.yml b/projects/assimp.org/package.yml
index f48ef934..5143a463 100644
--- a/projects/assimp.org/package.yml
+++ b/projects/assimp.org/package.yml
@@ -16,10 +16,12 @@ build:
       gnu.org/patch: '*'
   script:
     - run: curl $PATCH | patch -p1 || true
-      if: darwin
+      if: <5.3.0
     - cmake -S . -B build -G Ninja $CMAKE_ARGS
     - cmake --build build
     - cmake --install build
+    - run: cp -a contrib {{prefix}}/include
+      if: '>=5.3.0'
   env:
     PATCH: https://github.com/assimp/assimp/commit/5a89d6fee138f8bc979b508719163a74ddc9a384.patch?full_index=1
     CMAKE_ARGS: