diff --git a/CHANGELOG.md b/CHANGELOG.md
index f07a15e..72b3077 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # @digitalbazaar/http-client ChangeLog
 
+## 5.0.0 - 2026-xx-xx
+
+### Changed
+- Update dev dependencies.
+
 ## 4.3.0 - 2026-01-15
 
 ### Changed
diff --git a/package.json b/package.json
index 8ea6b09..2047bbe 100644
--- a/package.json
+++ b/package.json
@@ -41,13 +41,13 @@
     "undici": "^6.23.0"
   },
   "devDependencies": {
-    "@digitalbazaar/eslint-config": "^7.0.0",
+    "@digitalbazaar/eslint-config": "^9.0.0",
     "c8": "^10.1.3",
     "chai": "^4.5.0",
-    "cors": "^2.8.5",
+    "cors": "^2.8.6",
     "cross-env": "^10.1.0",
     "detect-node": "^2.1.0",
-    "eslint": "^9.39.2",
+    "eslint": "^10.7.0",
     "express": "^5.2.1",
     "karma": "^6.4.4",
     "karma-chai": "^0.1.0",
@@ -56,10 +56,10 @@
     "karma-mocha-reporter": "^2.2.5",
     "karma-sourcemap-loader": "^0.4.0",
     "karma-webpack": "^5.0.1",
-    "mocha": "^11.7.5",
-    "rimraf": "^6.1.2",
-    "rollup": "^4.55.1",
-    "webpack": "^5.104.1"
+    "mocha": "^11.7.6",
+    "rimraf": "^6.1.3",
+    "rollup": "^4.62.2",
+    "webpack": "^5.109.0"
   },
   "repository": {
     "type": "git",
diff --git a/tests/.eslintrc.cjs b/tests/.eslintrc.cjs
deleted file mode 100644
index f76d0f3..0000000
--- a/tests/.eslintrc.cjs
+++ /dev/null
@@ -1,8 +0,0 @@
-module.exports = {
-  env: {
-    mocha: true
-  },
-  globals: {
-    should: true
-  }
-};