diff --git a/pubsub/noxfile.py b/pubsub/noxfile.py
index a2eefbb6765f..7949a4e3925a 100644
--- a/pubsub/noxfile.py
+++ b/pubsub/noxfile.py
@@ -86,7 +86,7 @@ def default(session):
     )
 
 
-@nox.session(python=["2.7", "3.5", "3.6", "3.7"])
+@nox.session(python=["2.7", "3.5", "3.6", "3.7", "3.8"])
 def unit(session):
     """Run the unit test suite."""
     default(session)
diff --git a/pubsub/synth.metadata b/pubsub/synth.metadata
index d732bd24e76a..48f9b92bf006 100644
--- a/pubsub/synth.metadata
+++ b/pubsub/synth.metadata
@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-11-13T13:23:51.614817Z",
+  "updateTime": "2020-01-08T13:27:29.257325Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.41.1",
-        "dockerImage": "googleapis/artman@sha256:545c758c76c3f779037aa259023ec3d1ef2d57d2c8cd00a222cb187d63ceac5e"
+        "version": "0.43.0",
+        "dockerImage": "googleapis/artman@sha256:264654a37596a44b0668b8ce6ac41082d713f6ee150b3fc6425fa78cc64e4f20"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "88bbf96b90089994ed16208a0f38cdd07f743742",
-        "internalRef": "280134477"
+        "sha": "08b488e0660c59842a7dee0e3e2b65d9e3a514a9",
+        "internalRef": "288625007"
       }
     },
     {