diff --git a/test/typescript/tsconfig.custom.json b/test/typescript/tsconfig.custom.json
index 6f480114f0da..8f3836ecea7d 100644
--- a/test/typescript/tsconfig.custom.json
+++ b/test/typescript/tsconfig.custom.json
@@ -1,5 +1,8 @@
 {
   "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "isolatedDeclarations": false
+  },
   "include": [
     "**/fail.test-d.ts"
   ],
diff --git a/test/typescript/tsconfig.empty.json b/test/typescript/tsconfig.empty.json
index 6189af55bbc9..5ad3866244aa 100644
--- a/test/typescript/tsconfig.empty.json
+++ b/test/typescript/tsconfig.empty.json
@@ -1,5 +1,8 @@
 {
   "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "isolatedDeclarations": false
+  },
   "include": [
     "src"
   ],
diff --git a/test/typescript/tsconfig.fails.json b/test/typescript/tsconfig.fails.json
index 976ac5b3b7a2..e95fe666ac46 100644
--- a/test/typescript/tsconfig.fails.json
+++ b/test/typescript/tsconfig.fails.json
@@ -1,5 +1,8 @@
 {
   "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "isolatedDeclarations": false
+  },
   "include": [
     "./failing/*"
   ],
diff --git a/test/typescript/tsconfig.json b/test/typescript/tsconfig.json
index f7781f12f6cf..ce77b9942684 100644
--- a/test/typescript/tsconfig.json
+++ b/test/typescript/tsconfig.json
@@ -1,5 +1,6 @@
 {
   "extends": "../../tsconfig.base.json",
+  "compilerOptions": { "isolatedDeclarations": false },
   "include": [
     "./**/*.ts",
     "./**/*.js"