diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6efdeda..30d9100 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@
 - Fix crashing Blender when running in background mode (e.g. without GUI).
 - Flamenco: Include extra job parameters to allow for encoding a video at the end of a render
   job that produced an image sequence.
+- Flamenco: Compress all blend files, and not just the one we save from Blender.
+  Requires BAT 0.5 or newer.
 
 
 ## Version 1.9.4 (2018-11-01)
diff --git a/blender_cloud/flamenco/bat_interface.py b/blender_cloud/flamenco/bat_interface.py
index a2516a8..e022a0e 100644
--- a/blender_cloud/flamenco/bat_interface.py
+++ b/blender_cloud/flamenco/bat_interface.py
@@ -109,7 +109,7 @@ async def copy(context,
 
     wm = bpy.context.window_manager
 
-    with pack.Packer(base_blendfile, project, target) as packer:
+    with pack.Packer(base_blendfile, project, target, compress=True) as packer:
         with _packer_lock:
             if exclusion_filter:
                 packer.exclude(*exclusion_filter.split())
diff --git a/requirements.txt b/requirements.txt
index 45ea3e2..7368d25 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 lockfile==0.12.2
 pillarsdk==1.7.0
 wheel==0.29.0
-blender-asset-tracer>=0.4
+blender-asset-tracer>=0.5
 
 # Secondary requirements:
 asn1crypto==0.24.0