diff --git a/scripts/lib.sh b/scripts/lib.sh
index 4fbf49c61..c07e4d753 100755
--- a/scripts/lib.sh
+++ b/scripts/lib.sh
@@ -300,8 +300,8 @@ elif [ "$OSNAME" == "ubuntu"  ] || [ "$OSNAME" == "debian" ]; then
     aptitude install -y libcurl4-gnutls-dev
     apt-get install -y devscripts
 
-    apt install -y php-common webp
-    apt install -y lzma lzma-dev
+    apt install -y php-common webp scons
+    apt install -y lzma lzma-dev libunwind-dev
 
     apt install -y libpcre3 libpcre3-dev 
     apt install -y openssl libssl-dev