diff --git a/pw_env_setup/py/pw_env_setup/cipd_setup/compatibility.json b/pw_env_setup/py/pw_env_setup/cipd_setup/compatibility.json
index 9132342..c16881f 100644
--- a/pw_env_setup/py/pw_env_setup/cipd_setup/compatibility.json
+++ b/pw_env_setup/py/pw_env_setup/cipd_setup/compatibility.json
@@ -4,5 +4,11 @@
     "tags": [
       "version:3.7.7.chromium.10"
     ]
+  },
+  {
+    "path": "pigweed/third_party/gcc-arm-none-eabi/${os}-${arch=amd64}",
+    "tags": [
+      "version:9-2020-q2-update"
+    ]
   }
 ]