diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7fc678..d96024f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # CHANGELOG
 
+## v2.2.0
+- Gzip payload of request to Upload API #183 - @niceking
+
 ## v2.1.0
 - Major change: deprecates websocket connection in favour of sending HTTP requests to the Upload API. In future, websocket support will be completely removed from Buildkite and only version 2.1+ of this gem will continue to work.
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 61ffd73..a06e58b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    buildkite-test_collector (2.1.0)
+    buildkite-test_collector (2.2.0)
       activesupport (>= 4.2)
 
 GEM
diff --git a/lib/buildkite/test_collector/version.rb b/lib/buildkite/test_collector/version.rb
index 4231741..e631877 100644
--- a/lib/buildkite/test_collector/version.rb
+++ b/lib/buildkite/test_collector/version.rb
@@ -2,7 +2,7 @@
 
 module Buildkite
   module TestCollector
-    VERSION = "2.1.0"
+    VERSION = "2.2.0"
     NAME = "buildkite-test_collector"
   end
 end
diff --git a/spec/test_collector/http_client_spec.rb b/spec/test_collector/http_client_spec.rb
index 9891e9e..1345b3b 100644
--- a/spec/test_collector/http_client_spec.rb
+++ b/spec/test_collector/http_client_spec.rb
@@ -25,7 +25,7 @@
       "run_env": {
         "CI": nil,
         "key": "build-123",
-        "version": "2.1.0",
+        "version": Buildkite::TestCollector::VERSION,
         "collector": "ruby-buildkite-test_collector",
         "test": "test_value"
       },