diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f76271..5dbcb52 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # CHANGELOG
 
+## v4.1.0-alpha.2
+
+- fix(test-utils) global function return type (#13)
+- Bump dev-tools
+
 ## v4.1.0-alpha.1
 
 - chore: Switch to @vis.gl/dev-tools and CI release
diff --git a/lerna.json b/lerna.json
index 155f8e4..4ef555d 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,6 +1,6 @@
 {
   "lerna": "2.9.1",
-  "version": "4.1.0-alpha.1",
+  "version": "4.1.0-alpha.2",
   "packages": [
     "modules/*"
   ],
diff --git a/modules/bench/package.json b/modules/bench/package.json
index 5f1d7ab..9392c6f 100644
--- a/modules/bench/package.json
+++ b/modules/bench/package.json
@@ -3,7 +3,7 @@
   "description": "JavaScript benchmarking utility",
   "license": "MIT",
   "type": "module",
-  "version": "4.1.0-alpha.1",
+  "version": "4.1.0-alpha.2",
   "keywords": [
     "bench",
     "benchmark",
@@ -28,7 +28,7 @@
     "src"
   ],
   "dependencies": {
-    "@probe.gl/log": "4.1.0-alpha.1"
+    "@probe.gl/log": "4.1.0-alpha.2"
   },
   "gitHead": "95541d68783bfd50cbaf9b2a15b3cb41f1ff8284"
 }
diff --git a/modules/env/package.json b/modules/env/package.json
index 242d130..9eaea5a 100644
--- a/modules/env/package.json
+++ b/modules/env/package.json
@@ -3,7 +3,7 @@
   "description": "JavaScript environment detection for browser and Node",
   "license": "MIT",
   "type": "module",
-  "version": "4.1.0-alpha.1",
+  "version": "4.1.0-alpha.2",
   "keywords": [
     "javascript",
     "profiling",
diff --git a/modules/log/package.json b/modules/log/package.json
index bd57997..201c4a0 100644
--- a/modules/log/package.json
+++ b/modules/log/package.json
@@ -3,7 +3,7 @@
   "description": "JavaScript debug logging for browser and Node",
   "license": "MIT",
   "type": "module",
-  "version": "4.1.0-alpha.1",
+  "version": "4.1.0-alpha.2",
   "keywords": [
     "javascript",
     "profiling",
@@ -33,7 +33,7 @@
   ],
   "browser": {},
   "dependencies": {
-    "@probe.gl/env": "4.1.0-alpha.1"
+    "@probe.gl/env": "4.1.0-alpha.2"
   },
   "gitHead": "95541d68783bfd50cbaf9b2a15b3cb41f1ff8284"
 }
diff --git a/modules/react-bench/package.json b/modules/react-bench/package.json
index 4e46ede..7469fa3 100644
--- a/modules/react-bench/package.json
+++ b/modules/react-bench/package.json
@@ -3,7 +3,7 @@
   "description": "A React component to run and visualize `@probe.gl/bench` benchmarks.",
   "license": "MIT",
   "type": "module",
-  "version": "4.1.0-alpha.1",
+  "version": "4.1.0-alpha.2",
   "keywords": [
     "javascript",
     "bench",
diff --git a/modules/seer/package.json b/modules/seer/package.json
index e8c8070..f4ec73e 100644
--- a/modules/seer/package.json
+++ b/modules/seer/package.json
@@ -1,6 +1,6 @@
 {
   "name": "seer",
-  "version": "4.1.0-alpha.1",
+  "version": "4.1.0-alpha.2",
   "description": "A customizable devtool solution",
   "license": "MIT",
   "type": "module",
diff --git a/modules/stats-widget/package.json b/modules/stats-widget/package.json
index 25e5653..bef1cc3 100644
--- a/modules/stats-widget/package.json
+++ b/modules/stats-widget/package.json
@@ -3,7 +3,7 @@
   "description": "DOM widgets for testing and profiling",
   "license": "MIT",
   "type": "module",
-  "version": "4.1.0-alpha.1",
+  "version": "4.1.0-alpha.2",
   "keywords": [
     "javascript",
     "profiling",
@@ -33,7 +33,7 @@
     "@probe.gl/stats": "^4.0.0"
   },
   "devDependencies": {
-    "@probe.gl/stats": "4.1.0-alpha.1"
+    "@probe.gl/stats": "4.1.0-alpha.2"
   },
   "gitHead": "95541d68783bfd50cbaf9b2a15b3cb41f1ff8284"
 }
diff --git a/modules/stats/package.json b/modules/stats/package.json
index 8041a5d..fc0771d 100644
--- a/modules/stats/package.json
+++ b/modules/stats/package.json
@@ -3,7 +3,7 @@
   "description": "Stats object for reporting performance statistics",
   "license": "MIT",
   "type": "module",
-  "version": "4.1.0-alpha.1",
+  "version": "4.1.0-alpha.2",
   "keywords": [
     "javascript",
     "profiling",
diff --git a/modules/test-utils/package.json b/modules/test-utils/package.json
index a04d6ce..308afa5 100644
--- a/modules/test-utils/package.json
+++ b/modules/test-utils/package.json
@@ -3,7 +3,7 @@
   "description": "JavaScript browser-based testing utilities",
   "license": "MIT",
   "type": "module",
-  "version": "4.1.0-alpha.1",
+  "version": "4.1.0-alpha.2",
   "keywords": [
     "integration test",
     "render test"
@@ -33,7 +33,7 @@
     "puppeteer": false
   },
   "dependencies": {
-    "@probe.gl/log": "4.1.0-alpha.1",
+    "@probe.gl/log": "4.1.0-alpha.2",
     "@types/pngjs": "^6.0.1",
     "pixelmatch": "^4.0.2"
   },
diff --git a/yarn.lock b/yarn.lock
index a39319a..deaafad 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1644,7 +1644,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@probe.gl/bench@workspace:modules/bench"
   dependencies:
-    "@probe.gl/log": "npm:4.1.0-alpha.1"
+    "@probe.gl/log": "npm:4.1.0-alpha.2"
   languageName: unknown
   linkType: soft
 
@@ -1655,7 +1655,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@probe.gl/env@npm:4.1.0-alpha.1, @probe.gl/env@workspace:modules/env":
+"@probe.gl/env@npm:4.1.0-alpha.2, @probe.gl/env@workspace:modules/env":
   version: 0.0.0-use.local
   resolution: "@probe.gl/env@workspace:modules/env"
   languageName: unknown
@@ -1670,11 +1670,11 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@probe.gl/log@npm:4.1.0-alpha.1, @probe.gl/log@workspace:modules/log":
+"@probe.gl/log@npm:4.1.0-alpha.2, @probe.gl/log@workspace:modules/log":
   version: 0.0.0-use.local
   resolution: "@probe.gl/log@workspace:modules/log"
   dependencies:
-    "@probe.gl/env": "npm:4.1.0-alpha.1"
+    "@probe.gl/env": "npm:4.1.0-alpha.2"
   languageName: unknown
   linkType: soft
 
@@ -1720,7 +1720,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@probe.gl/stats-widget@workspace:modules/stats-widget"
   dependencies:
-    "@probe.gl/stats": "npm:4.1.0-alpha.1"
+    "@probe.gl/stats": "npm:4.1.0-alpha.2"
   peerDependencies:
     "@probe.gl/stats": ^4.0.0
   languageName: unknown
@@ -1733,7 +1733,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@probe.gl/stats@npm:4.1.0-alpha.1, @probe.gl/stats@workspace:modules/stats":
+"@probe.gl/stats@npm:4.1.0-alpha.2, @probe.gl/stats@workspace:modules/stats":
   version: 0.0.0-use.local
   resolution: "@probe.gl/stats@workspace:modules/stats"
   languageName: unknown
@@ -1759,7 +1759,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@probe.gl/test-utils@workspace:modules/test-utils"
   dependencies:
-    "@probe.gl/log": "npm:4.1.0-alpha.1"
+    "@probe.gl/log": "npm:4.1.0-alpha.2"
     "@types/pngjs": "npm:^6.0.1"
     pixelmatch: "npm:^4.0.2"
   peerDependencies: