diff --git a/src/freedombone-utils-time b/src/freedombone-utils-time
index d9b10d4e..155e6403 100755
--- a/src/freedombone-utils-time
+++ b/src/freedombone-utils-time
@@ -101,6 +101,7 @@ function time_synchronisation_tlsdate {
 
 	apt-get -y remove tlsdate ntpdate
 	apt-get -y install build-essential autoconf libevent-dev
+	apt-get -y install pkg-config libtool libssl-dev
 
 	cd $INSTALL_DIR
 	function_check git_clone