diff --git a/graphics/Blender/README b/graphics/Blender/README
index 64c01e2665..d8d09ad6bb 100644
--- a/graphics/Blender/README
+++ b/graphics/Blender/README
@@ -22,6 +22,9 @@ support for it. It may be disabled by passing EMBREE=no when building:
 Note for 32-bit users: embree is 64-bit only, and can't be built on
 32-bit Slackware.
 
+Optional dependency: alembic-framework. If already installed, it will
+be automatically detected and incorporated when Blender is built.
+
 To enable support for OptiX Ray Tracing Engine, the OptiX SDK must be
 available in the build environment. Use the OPTIX_ROOT_DIR environment
 variable to identify the SDK location e.g.