diff --git a/assimp.changes b/assimp.changes
index 99cb9a8..69e946e 100644
--- a/assimp.changes
+++ b/assimp.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Sep 17 21:04:34 UTC 2020 - Christophe Giboudeaux <christophe@krop.fr>
+
+- Remove unneeded build dependencies.
+  assimp doesn't need Qt5, boost, devIL and glu.
+
 -------------------------------------------------------------------
 Thu Jul  9 20:42:17 UTC 2020 - Christophe Giboudeaux <christophe@krop.fr>
 
diff --git a/assimp.spec b/assimp.spec
index 19111dc..ecc675a 100644
--- a/assimp.spec
+++ b/assimp.spec
@@ -32,14 +32,9 @@ BuildRequires:  cmake
 BuildRequires:  dos2unix
 BuildRequires:  gcc-c++
 BuildRequires:  irrlicht-devel
-BuildRequires:  libboost_headers-devel
 BuildRequires:  pkgconfig
-BuildRequires:  zlib-devel
-BuildRequires:  pkgconfig(IL)
-BuildRequires:  pkgconfig(Qt5OpenGL)
-BuildRequires:  pkgconfig(Qt5Widgets)
-BuildRequires:  pkgconfig(glu)
 BuildRequires:  pkgconfig(minizip)
+BuildRequires:  pkgconfig(zlib)
 
 %description
 Assimp is a library to load and process geometric scenes from various data formats.