diff --git a/lock b/lock
index 8f9b06d..aab2903 100755
--- a/lock
+++ b/lock
@@ -8,7 +8,8 @@ echo "Securing Communication to Space Systems..."
 echo "out" > /sys/class/gpio/gpio22/direction
 sleep 0.5
 echo "Open Communication Channel..."
-curl -s -o /dev/null "hamburg.ccc.de/dooris/status.php?apikey=sesamaenderdich&action=close" &
+# Silent, Output to /dev/null, Timeout after 5s and retry 12 times, each doubling the waitingtime until ten minutes.
+curl -s -o /dev/null -m 5 --connect-timeout 5 --retry 12 "hamburg.ccc.de/dooris/status.php?apikey=sesamaenderdich&action=close" &
 echo "Locking Space..."
 echo "1" > /sys/class/gpio/gpio22/value
 sleep 0.3
diff --git a/unlock b/unlock
index 83b7d4c..58d4b22 100755
--- a/unlock
+++ b/unlock
@@ -8,7 +8,7 @@ echo "Securing Communication to Space Systems..."
 echo "out" > /sys/class/gpio/gpio27/direction
 sleep 0.5
 echo "Open Communication Channel..."
-curl -s -o /dev/null "hamburg.ccc.de/dooris/status.php?apikey=sesamaenderdich&action=open" &
+curl -s -o /dev/null -m 5 --connect-timeout 5 --retry 12 "hamburg.ccc.de/dooris/status.php?apikey=sesamaenderdich&action=open" &
 echo "Unlocking Space..."
 echo "1" > /sys/class/gpio/gpio27/value
 sleep 0.3