diff --git a/community/blender/PKGBUILD b/community/blender/PKGBUILD
index 39e4f86a8..f4a1226d7 100644
--- a/community/blender/PKGBUILD
+++ b/community/blender/PKGBUILD
@@ -17,13 +17,17 @@ buildarch=8
 # or simply roll with a new version. I usually choose the latter when the former seems
 # unreasonable.
 
+# For legal reasons, we can't separately package the Optix headers so we'll
+# just build the package against them. I checked with NVIDIA and this way is
+# fine with them.
+
 _gittag=v2.81a
 # _gitcommit=054dbb833e15275e0e991e2c15e754a3e7583716
 
 pkgname=blender
 pkgver=2.81.a
 [[ -n $_gitcommit ]] && pkgver=${pkgver}.git1.${_gitcommit:0:8}
-pkgrel=3
+pkgrel=4
 epoch=17
 pkgdesc="A fully integrated 3D graphics creation suite"
 arch=('x86_64')
@@ -39,7 +43,8 @@ options=(!strip)
 source=("git://git.blender.org/blender-addons.git"
         "git://git.blender.org/blender-addons-contrib.git"
         "git://git.blender.org/blender-translations.git"
-        "git://git.blender.org/blender-dev-tools.git")
+        "git://git.blender.org/blender-dev-tools.git"
+        https://developer.download.nvidia.com/redist/optix/v7.0/OptiX-7.0.0-include.zip)
 if [[ -n $_gittag ]]; then
     source+=("${pkgname}-${pkgver}::git://git.blender.org/blender.git#tag=${_gittag}")
 elif [[ -n $_gitcommit ]]; then
@@ -49,6 +54,7 @@ sha512sums=('SKIP'
             'SKIP'
             'SKIP'
             'SKIP'
+            'b2cff73def3757d4259f4b4d318a8ccfe166bf7c215cbb2124f1c81bd6e742f96207285b24eb4d99b527b7b97dc6d5e8fdf2f16d78d5d1e2684c26d681328491'
             'SKIP')
 
 prepare() {
@@ -70,6 +76,7 @@ build() {
   cmake \
     -GNinja \
     -C../build_files/cmake/config/blender_release.cmake .. \
+    -DOPTIX_ROOT_DIR="$srcdir"/include \
     -DCMAKE_INSTALL_PREFIX=/usr \
     -DCMAKE_BUILD_TYPE=Release \
     -DWITH_INSTALL_PORTABLE=OFF \