diff --git a/lam-packaging/buildPackages b/lam-packaging/buildPackages
index 0c4652b5..056c32f8 100755
--- a/lam-packaging/buildPackages
+++ b/lam-packaging/buildPackages
@@ -25,11 +25,7 @@ function minify {
 	echo "Minify JS files in $dir"
 	local files=`ls $dir/*.js`
 	for file in $files; do
-		# skip dropmenu file, incompatible with YUI compressor
-		if [[ $file =~ .*dropmenu.* ]]; then
-			continue
-		fi
-		yui-compressor --nomunge --preserve-semi --disable-optimizations --charset UTF-8 -o ${file}-MIN $file
+		closure-compiler --charset UTF-8 --js file --js_output_file ${file}-MIN
 		rm $file
 		mv ${file}-MIN $file
 		# add final new line to supress Debian warnings
@@ -43,7 +39,7 @@ function minifyCSS {
 	echo "Minify CSS files in $dir"
 	local files=`ls $dir/*.css`
 	for file in $files; do
-		yui-compressor --nomunge --preserve-semi --disable-optimizations --charset UTF-8 -o ${file}-MIN $file
+		cleancss -o ${file}-MIN $file file
 		rm $file
 		mv ${file}-MIN $file
 		# add final new line to supress Debian warnings
@@ -105,7 +101,7 @@ perl -pi -e "s/\\@\\@VERSION\\@\\@/$VERSION/g" configure.ac
 autoconf
 rm -r autom4te.cache
 cd ..
-# Debian gets orig.tar.bz2 with original JS files 
+# Debian gets orig.tar.bz2 with original JS files
 tar cfj ldap-account-manager-$VERSION.tar.bz2 --owner=root --group=root --mtime=now ldap-account-manager-$VERSION
 mv ldap-account-manager-$VERSION.tar.bz2 Debian/ldap-account-manager_$VERSION.orig.tar.bz2
 cp -ar ldap-account-manager-$VERSION Debian/
@@ -125,7 +121,7 @@ perl -pi -e "s/\\@\\@VERSION\\@\\@/$VERSION/g" configure.ac
 autoconf
 rm -r autom4te.cache
 cd ..
-# Debian gets orig.tar.bz2 with original JS files 
+# Debian gets orig.tar.bz2 with original JS files
 tar cfj ldap-account-manager-$VERSION.tar.bz2 --owner=root --group=root --mtime=now ldap-account-manager-$VERSION
 mv ldap-account-manager-$VERSION.tar.bz2 Debian/ldap-account-manager_$VERSION.orig.tar.bz2
 cp -ar ldap-account-manager-$VERSION Debian/
diff --git a/lam-packaging/debian/control b/lam-packaging/debian/control
index 8cd62fba..b08c1514 100644
--- a/lam-packaging/debian/control
+++ b/lam-packaging/debian/control
@@ -3,7 +3,7 @@ Maintainer: Roland Gruber <post@rolandgruber.de>
 Section: web
 Priority: extra
 Standards-Version: 3.9.8
-Build-Depends: debhelper (>= 7), po-debconf, yui-compressor
+Build-Depends: debhelper (>= 7), po-debconf, cleancss, closure-compiler
 Homepage: https://www.ldap-account-manager.org/
 
 Package: ldap-account-manager
diff --git a/lam-packaging/debian/minify b/lam-packaging/debian/minify
index 3f16dd78..4994eae7 100755
--- a/lam-packaging/debian/minify
+++ b/lam-packaging/debian/minify
@@ -2,17 +2,21 @@
 
 set -e
 
-files=`ls templates/lib/*.js style/*.css`
+files=`ls templates/lib/*.js`
 for file in $files; do
-	# skip dropmenu file, incompatible with YUI compressor
-	if [[ $file =~ .*dropmenu.* ]]; then
-		continue
-	fi
-	yui-compressor --nomunge --preserve-semi --disable-optimizations --charset UTF-8 -o ${file}-MIN $file
+	closure-compiler --charset UTF-8 --js file --js_output_file ${file}-MIN
 	rm $file
 	mv ${file}-MIN $file
 	# add final new line to supress Debian warnings
 	echo "" >> $file
 done
 
+files=`ls style/*.css`
+for file in $files; do
+	cleancss -o ${file}-MIN $file file
+	rm $file
+	mv ${file}-MIN $file
+	# add final new line to supress Debian warnings
+	echo "" >> $file
+done