diff --git a/.gitignore b/.gitignore
index 6ed8e202..5d961ecc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,7 @@ target/
 # Node
 node_modules/
 npm-debug.log
+yarn-error.log
 
 # Istanbul
 coverage/
diff --git a/package.json b/package.json
index 4d897b4d..39485a08 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
   "devDependencies": {
     "autoprefixer": "^6.7.7",
     "browserify": "^14.1.0",
-    "clean-css": "^4.0.9",
+    "clean-css-cli": "^4.0.9",
     "codacy-coverage": "^2.0.1",
     "eslint": "^3.18.0",
     "eslint-plugin-promise": "^3.5.0",
diff --git a/scripts/release-website.sh b/scripts/release-website.sh
index e2f2ea26..841732ad 100755
--- a/scripts/release-website.sh
+++ b/scripts/release-website.sh
@@ -24,7 +24,7 @@ rm -rf ${OUTPUT_DIR}
 mkdir -p ${OUTPUT_DIR}
 
 echo "Minifying ${OUTPUT_CSS_FILE} to ${OUTPUT_MIN_CSS_FILE}"
-postcss --use autoprefixer ${INPUT_CSS_FILE} -d ${OUTPUT_DIR}
+postcss --use autoprefixer -o ${OUTPUT_CSS_FILE} ${INPUT_CSS_FILE}
 cleancss --advanced --compatibility=ie8 -o ${OUTPUT_MIN_CSS_FILE} ${OUTPUT_CSS_FILE}
 
 echo "Generating website js aggregation file in ${OUTPUT_DEMO_JS}"
diff --git a/yarn.lock b/yarn.lock
index a6a1b9e7..b61f1be6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -499,6 +499,13 @@ circular-json@^0.3.0:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.3.1.tgz#be8b36aefccde8b3ca7aa2d6afc07a37242c0d2d"
 
+clean-css-cli@^4.0.9:
+  version "4.0.9"
+  resolved "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-4.0.9.tgz#fac3b8d052debe10e75a1ffe57aa48dab5351bf6"
+  dependencies:
+    clean-css "^4.0.9"
+    commander "2.x"
+
 clean-css@^4.0.9:
   version "4.0.9"
   resolved "https://registry.npmjs.org/clean-css/-/clean-css-4.0.9.tgz#63ff450b3f939508cc0cd2989bb9daaedc98333e"
@@ -575,7 +582,7 @@ combined-stream@^1.0.5, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@2.9.0, commander@^2.9.0:
+commander@2.9.0, commander@2.x, commander@^2.9.0:
   version "2.9.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
   dependencies: