--- a/taskcluster/docker/image_builder/download-and-compress
+++ b/taskcluster/docker/image_builder/download-and-compress
@@ -4,17 +4,17 @@
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 import os
 import sys
 import time
 
 import requests
 import requests_unixsocket
-import zstd
+import zstandard as zstd
 
 # Allow requests to fetch from UNIX domain sockets.
 requests_unixsocket.monkeypatch()
 
 
 def download_and_compress(url, path, level):
     r = requests.get(url, stream=True)
 

--- a/taskcluster/docker/image_builder/setup.sh
+++ b/taskcluster/docker/image_builder/setup.sh
@@ -34,27 +34,27 @@ chmod +x /usr/local/bin/download-and-com
 mkdir -p /builds/worker/workspace
 
 # Install python-zstandard.
 (
 cd /setup
 tooltool_fetch <<EOF
 [
   {
-    "size": 463794,
+    "size": 558068,
     "visibility": "public",
-    "digest": "c6ba906403e5c18b374faf9f676b10f0988b9f4067bd6c52c548d7dee58fac79974babfd5c438aef8da0a5260158116db69b11f2a52a775772d9904b9d86fdbc",
+    "digest": "72b1fc542e5af36fc660d7b8d3882f0a25644d3b66316293717aabf9ba8cf578e49e2cf45e63e962c5535ec1f8b3e83248c379d34b0cab2ef1a950205ad153ce",
     "algorithm": "sha512",
-    "filename": "zstandard-0.8.0.tar.gz"
+    "filename": "zstandard-0.9.0.tar.gz"
   }
 ]
 EOF
 )
 
-/usr/bin/pip -v install /setup/zstandard-0.8.0.tar.gz
+/usr/bin/pip -v install /setup/zstandard-0.9.0.tar.gz
 
 # python-pip only needed to install python-zstandard. Removing it removes
 # several hundred MB of dependencies from the image.
 apt-get purge -y python-pip
 
 # Purge apt-get caches to minimize image size
 apt-get auto-remove -y
 apt-get clean -y