diff --git a/fhem/contrib/signal/signal_install.sh b/fhem/contrib/signal/signal_install.sh
index 94faed5e5..26c9a61c6 100755
--- a/fhem/contrib/signal/signal_install.sh
+++ b/fhem/contrib/signal/signal_install.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #$Id:$
-SCRIPTVERSION="3.12"
+SCRIPTVERSION="3.13"
 # Author: Adimarantis
 # License: GPL
 #Install script for signal-cli 
@@ -164,17 +164,21 @@ check_and_compare_file() {
 ARCH=`arch`
 OSNAME=`uname`
 APT=`which apt`
+GLIBC=`ldd --version |  grep -m1 -o '[0-9]\.[0-9][0-9]' | head -n 1`
 if [ $ARCH = "armv7l" ]; then 
 	ARCH="armhf"
 	ARCHJ="arm"
 elif [ $ARCH = "x86_64" ]; then
 	ARCH="amd64"
 	ARCHJ="x64"
+elif [ $ARCH = "aarch64" ]; then
+	ARCH="aarch64"
+	ARCHJ="aarch64"	
+	GLIBC="2.28" #experimental
 fi
-GLIBC=`ldd --version |  grep -m1 -o '[0-9]\.[0-9][0-9]' | head -n 1`
 
 IDENTSTR=$ARCH-glibc$GLIBC-$LIBRARYVERSION
-KNOWN=("amd64-glibc2.27-0.11.2" "amd64-glibc2.28-0.11.2" "amd64-glibc2.31-0.11.2" "armhf-glibc2.28-0.11.2" "armhf-glibc2.31-0.11.2")
+KNOWN=("amd64-glibc2.27-0.11.2" "amd64-glibc2.28-0.11.2" "amd64-glibc2.31-0.11.2" "armhf-glibc2.28-0.11.2" "armhf-glibc2.31-0.11.2" "aarch64-glibc2.28-0.11.2")
 
 GETLIBS=1
 if [[ ! " ${KNOWN[*]} " =~ " ${IDENTSTR} " ]]; then