diff --git a/package.json b/package.json
index f1b83eb..8d9b3c7 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
         "serve": "yarn demo:serve",
         "codecov": "codecov",
         "core:build": "ng build @ngqp/core",
-        "core:build:prod": "yarn core:build",
+        "core:build:prod": "ng build @ngqp/core --prod",
         "core:test": "ng test @ngqp/core --code-coverage --source-map=true --progress=false --watch=false",
         "core:test:watch": "ng test @ngqp/core --watch=true",
         "core:release:prepare": "scripts/prepare-release.sh",
@@ -84,4 +84,4 @@
         "tslint": "~6.1.0",
         "typescript": "~4.0.3"
     }
-}
\ No newline at end of file
+}
diff --git a/scripts/prepare-release.sh b/scripts/prepare-release.sh
index 201bbd1..2e8fdfa 100755
--- a/scripts/prepare-release.sh
+++ b/scripts/prepare-release.sh
@@ -13,7 +13,7 @@ echo "[3] Updating CHANGELOG"
 cd projects/ngqp/core; standard-version --infile ../../../CHANGELOG.md; cd -
 
 echo "[4] Building @ngqp/core"
-yarn run core:build
+yarn run core:build:prod
 
 echo "[5] Copy README and LICENSE"
 cp README.md dist/ngqp/core