diff --git a/circuits/package.json b/circuits/package.json
index 62dd91c17f..f9d67726a6 100644
--- a/circuits/package.json
+++ b/circuits/package.json
@@ -7,7 +7,7 @@
     "build-test-circuits-c": "bash ./scripts/build_intel.sh",
     "build-test-circuits-wasm": "bash ./scripts/build_arm.sh",
     "watch": "tsc --watch",
-    "build": "tsc",
+    "build": "tsc -p tsconfig.build.json",
     "types": "tsc -p tsconfig.json --noEmit",
     "test": "ts-mocha --exit ts/__tests__/*.test.ts",
     "test:hasher": "ts-mocha --exit ts/__tests__/Hasher.test.ts",
diff --git a/circuits/tsconfig.build.json b/circuits/tsconfig.build.json
new file mode 100644
index 0000000000..8425198ea3
--- /dev/null
+++ b/circuits/tsconfig.build.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./build"
+  },
+  "include": ["./ts"],
+  "exclude": ["**/__tests__/**", "**/__tests__/**/*.test.ts"]
+}
diff --git a/cli/package.json b/cli/package.json
index 84dfcb7865..c3dc1136c3 100644
--- a/cli/package.json
+++ b/cli/package.json
@@ -7,12 +7,11 @@
     "maci-cli": "./build/ts/index.js"
   },
   "files": [
-    "ts",
     "package.json"
   ],
   "scripts": {
     "watch": "tsc --watch",
-    "build": "tsc",
+    "build": "tsc -p tsconfig.build.json",
     "postbuild": "cp package.json ./build",
     "types": "tsc -p tsconfig.json --noEmit",
     "test": "nyc ts-mocha --exit tests/**/*.test.ts",
diff --git a/cli/tsconfig.build.json b/cli/tsconfig.build.json
new file mode 100644
index 0000000000..f2423b9a54
--- /dev/null
+++ b/cli/tsconfig.build.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./build"
+  },
+  "include": ["./ts"],
+  "files": ["./hardhat.config.ts"]
+}
diff --git a/contracts/package.json b/contracts/package.json
index 784b0400cd..2866c101fc 100644
--- a/contracts/package.json
+++ b/contracts/package.json
@@ -9,7 +9,7 @@
     "compileSol": "./scripts/compileSol.sh $1",
     "moveIntegrationArtifacts": "cp -r artifacts/ ../integrationTests/artifacts",
     "prebuild": "npm run compileSol",
-    "build": "tsc",
+    "build": "tsc -p tsconfig.build.json",
     "postbuild": "cp -r ./artifacts ./build",
     "types": "tsc -p tsconfig.json --noEmit",
     "docs": "hardhat docgen",
diff --git a/contracts/tsconfig.build.json b/contracts/tsconfig.build.json
new file mode 100644
index 0000000000..4bd4656efc
--- /dev/null
+++ b/contracts/tsconfig.build.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./build"
+  },
+  "include": ["./ts", "./typechain-types"],
+  "files": ["./hardhat.config.ts"]
+}
diff --git a/core/package.json b/core/package.json
index f42d749951..36b26fb143 100644
--- a/core/package.json
+++ b/core/package.json
@@ -6,7 +6,7 @@
   "types": "build/ts/index.d.ts",
   "scripts": {
     "watch": "tsc --watch",
-    "build": "tsc",
+    "build": "tsc -p tsconfig.build.json",
     "types": "tsc -p tsconfig.json --noEmit",
     "test:processMessage": "ts-mocha --exit ts/__tests__/ProcessMessage.test.ts",
     "test:maciState": "ts-mocha --exit ts/__tests__/MaciState.test.ts",
diff --git a/core/tsconfig.build.json b/core/tsconfig.build.json
new file mode 100644
index 0000000000..8425198ea3
--- /dev/null
+++ b/core/tsconfig.build.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./build"
+  },
+  "include": ["./ts"],
+  "exclude": ["**/__tests__/**", "**/__tests__/**/*.test.ts"]
+}
diff --git a/crypto/package.json b/crypto/package.json
index 218b356ea7..e6bf1c7817 100644
--- a/crypto/package.json
+++ b/crypto/package.json
@@ -5,7 +5,7 @@
   "main": "build/ts/index.js",
   "scripts": {
     "watch": "tsc --watch",
-    "build": "tsc",
+    "build": "tsc -p tsconfig.build.json",
     "types": "tsc -p tsconfig.json --noEmit",
     "test": "nyc ts-mocha --exit ts/__tests__/*.test.ts",
     "test:crypto": "ts-mocha --exit ts/__tests__/Crypto.test.ts",
diff --git a/crypto/tsconfig.build.json b/crypto/tsconfig.build.json
new file mode 100644
index 0000000000..8425198ea3
--- /dev/null
+++ b/crypto/tsconfig.build.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./build"
+  },
+  "include": ["./ts"],
+  "exclude": ["**/__tests__/**", "**/__tests__/**/*.test.ts"]
+}
diff --git a/domainobjs/package.json b/domainobjs/package.json
index aa3b346ffd..e961c6e117 100644
--- a/domainobjs/package.json
+++ b/domainobjs/package.json
@@ -5,7 +5,7 @@
   "main": "build/ts/index.js",
   "scripts": {
     "watch": "tsc --watch",
-    "build": "tsc",
+    "build": "tsc -p tsconfig.build.json",
     "types": "tsc -p tsconfig.json --noEmit",
     "test": "nyc ts-mocha --exit ts/__tests__/**.test.ts"
   },
diff --git a/domainobjs/tsconfig.build.json b/domainobjs/tsconfig.build.json
new file mode 100644
index 0000000000..8425198ea3
--- /dev/null
+++ b/domainobjs/tsconfig.build.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./build"
+  },
+  "include": ["./ts"],
+  "exclude": ["**/__tests__/**", "**/__tests__/**/*.test.ts"]
+}