diff --git a/packages/dht/tsconfig.karma.json b/packages/dht/tsconfig.karma.json
index e1d0a37cc0..28bd6d922c 100644
--- a/packages/dht/tsconfig.karma.json
+++ b/packages/dht/tsconfig.karma.json
@@ -1,11 +1,7 @@
 {
   "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
-    "outDir": "dist",
-    "types": [
-      "jest",
-      "jest-extended"
-    ]
+    "outDir": "dist"
   },
   "include": [
     "src",
diff --git a/packages/proto-rpc/tsconfig.karma.json b/packages/proto-rpc/tsconfig.karma.json
index f8f93ce799..46624fd322 100644
--- a/packages/proto-rpc/tsconfig.karma.json
+++ b/packages/proto-rpc/tsconfig.karma.json
@@ -1,10 +1,7 @@
 {
   "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
-    "outDir": "dist",
-    "types": [
-      "jest"
-    ]
+    "outDir": "dist"
   },
   "include": [
     "src"
diff --git a/packages/trackerless-network/tsconfig.karma.json b/packages/trackerless-network/tsconfig.karma.json
index 7e3aa6a7b8..b6fd106096 100644
--- a/packages/trackerless-network/tsconfig.karma.json
+++ b/packages/trackerless-network/tsconfig.karma.json
@@ -1,11 +1,7 @@
 {
   "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
-    "outDir": "dist",
-    "types": [
-      "jest",
-      "@streamr/test-utils/customMatcherTypes"
-    ]
+    "outDir": "dist"
   },
   "include": [
     "src",
diff --git a/packages/utils/tsconfig.karma.json b/packages/utils/tsconfig.karma.json
index 012a97fdfc..46624fd322 100644
--- a/packages/utils/tsconfig.karma.json
+++ b/packages/utils/tsconfig.karma.json
@@ -1,11 +1,7 @@
 {
   "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
-    "outDir": "dist",
-    "types": [
-      "jest",
-      "jest-extended"
-    ]
+    "outDir": "dist"
   },
   "include": [
     "src"
diff --git a/tsconfig.karma.json b/tsconfig.karma.json
index de9383e1f6..599e6fba27 100644
--- a/tsconfig.karma.json
+++ b/tsconfig.karma.json
@@ -1,20 +1,12 @@
 {
   "$schema": "https://json.schemastore.org/tsconfig",
-  "display": "Browser – Streamr",
+  "display": "Browser - Streamr",
   "compilerOptions": {
     "target": "ES2015",
     "module": "commonjs",
     "allowJs": true,
     "declaration": true,
     "lib": [
-      "ES5",
-      "ES2015",
-      "ES2016",
-      "ES2017",
-      "ES2018",
-      "ES2019",
-      "ES2020",
-      "ES2021",
       "ESNext",
       "DOM"
     ],
@@ -23,7 +15,11 @@
     "resolveJsonModule": true,
     "moduleResolution": "node",
     "isolatedModules": true,
-    "types": [],
+    "types": [
+      "jest",
+      "jest-extended",
+      "@streamr/test-utils/customMatcherTypes"
+    ],
     "sourceMap": true,
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true,