diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 748218651..4eed8b98b 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -102,7 +102,6 @@ jobs:
         working-directory: src-testing
       - run: pnpm run build-declarations
         working-directory: src-testing
-        continue-on-error: true
       - run: pnpm run format-dprint
         working-directory: src-testing
       - run: pnpm run check-declarations
diff --git a/src-testing/package.json b/src-testing/package.json
index 029f293ec..4eb328aca 100644
--- a/src-testing/package.json
+++ b/src-testing/package.json
@@ -5,7 +5,7 @@
     "main": "",
     "scripts": {
         "create-src": "node create-src.js",
-        "build-declarations": "tsc",
+        "build-declarations": "tsc --declaration true --emitDeclarationOnly true",
         "check-declarations": "node declarations.js check",
         "copy-declarations": "node declarations.js copy",
         "type-check": "tsc --noEmit",
diff --git a/src-testing/tsconfig.json b/src-testing/tsconfig.json
index 64a7403f7..f293a64bd 100644
--- a/src-testing/tsconfig.json
+++ b/src-testing/tsconfig.json
@@ -3,8 +3,6 @@
         "target": "es2017",
         "module": "NodeNext",
         "types": [],
-        "declaration": true,
-        "emitDeclarationOnly": true,
         "forceConsistentCasingInFileNames": true,
         "strict": true
     }