diff --git a/beet-bbachain/package.json b/beet-bbachain/package.json
index e4e69a9..4c233e8 100644
--- a/beet-bbachain/package.json
+++ b/beet-bbachain/package.json
@@ -11,7 +11,7 @@
     "postversion": "git add package.json && git commit -m \"chore: update $npm_package_name to v$npm_package_version\" && git tag $npm_package_name@$npm_package_version",
     "prepublishOnly": "yarn check:publish-ready",
     "postpublish": "git push origin && git push origin --tags",
-    "build": "rimraf dist && tsc -p tsconfig.json --declaration",
+    "build": "rimraf dist && tsc -p tsconfig.build.json",
     "pretest": "yarn build",
     "test": "tape dist/cjs/test/*.js",
     "lint": "prettier -c ./src/",
diff --git a/beet-bbachain/tsconfig.build.json b/beet-bbachain/tsconfig.build.json
new file mode 100644
index 0000000..3865a85
--- /dev/null
+++ b/beet-bbachain/tsconfig.build.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "declaration": true,
+    "declarationDir": "./dist/types"
+  }
+}
diff --git a/beet-bbachain/tsconfig.json b/beet-bbachain/tsconfig.json
index 7c51627..e6cee08 100644
--- a/beet-bbachain/tsconfig.json
+++ b/beet-bbachain/tsconfig.json
@@ -3,9 +3,7 @@
   "compilerOptions": {
     "baseUrl": "./",
     "outDir": "./dist/cjs",
-    "module": "commonjs",
-    "declarationDir": "./dist/types",
-    "declaration": false
+    "module": "commonjs"
   },
   "include": ["src", "test"]
 }
diff --git a/beet/package.json b/beet/package.json
index 629df59..4103398 100644
--- a/beet/package.json
+++ b/beet/package.json
@@ -11,7 +11,7 @@
     "postversion": "git add package.json && git commit -m \"chore: update $npm_package_name to v$npm_package_version\" && git tag $npm_package_name@$npm_package_version",
     "prepublishOnly": "yarn check:publish-ready",
     "postpublish": "git push origin && git push origin --tags",
-    "build": "rimraf dist && tsc -p tsconfig.json --declaration",
+    "build": "rimraf dist && tsc -p tsconfig.build.json",
     "pretest": "yarn build",
     "test": "tape dist/cjs/test/{unit,compat}/*.js",
     "test:browser": "airtap ./test/{unit,compat}/*.ts",
diff --git a/beet/tsconfig.build.json b/beet/tsconfig.build.json
new file mode 100644
index 0000000..3865a85
--- /dev/null
+++ b/beet/tsconfig.build.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "declaration": true,
+    "declarationDir": "./dist/types"
+  }
+}
diff --git a/beet/tsconfig.json b/beet/tsconfig.json
index 7c51627..e6cee08 100644
--- a/beet/tsconfig.json
+++ b/beet/tsconfig.json
@@ -3,9 +3,7 @@
   "compilerOptions": {
     "baseUrl": "./",
     "outDir": "./dist/cjs",
-    "module": "commonjs",
-    "declarationDir": "./dist/types",
-    "declaration": false
+    "module": "commonjs"
   },
   "include": ["src", "test"]
 }