diff --git a/build_deb.sh b/build_deb.sh
index 2daeffb..d39b392 100644
--- a/build_deb.sh
+++ b/build_deb.sh
@@ -34,7 +34,7 @@ fpm -s python --python-bin python3 --python-pip pip3 --python-package-name-prefi
     -d "python3-pigpio" \
     -d "python3-numpy" \
     -d "ffmpeg" \
-    -v 0.0.4-17 -t deb setup.py
+    -v 0.0.4-19 -t deb setup.py
 
 #    --deb-changelog changelog \
 #    --deb-upstream-changelog changelog \
diff --git a/compLib/__init__.py b/compLib/__init__.py
index 8a479bd..e89df10 100644
--- a/compLib/__init__.py
+++ b/compLib/__init__.py
@@ -1,6 +1,16 @@
-__version__ = "0.0.4-17"
+__version__ = "0.0.4-19"
 
 import compLib.LogstashLogging
 import logging
+import apt
 
-print(f"Starting compLib! Version: {__version__} ...")
\ No newline at end of file
+try:
+    __versions = apt.Cache()["python3-complib"].versions
+    if len(__versions) != 1:
+        print(f"Starting compLib! \033[91mVersion: {__version__} is outdated\033[0m\n"
+              f"\033[92m[!] run the command 'apt update && apt install python3-complib' to install the newest version\033[0m")
+    else:
+        print(f"Starting compLib! \033[92mVersion: {__version__} is up to date\033[0m")
+except Exception as e:
+    compLib.LogstashLogging.Logging.get_logger().error(f"error during checking apt package version -> {str(e)}")
+    print(f"\033[91merror during checking apt package version -> {str(e)}\033[0m\n")
diff --git a/postinstall.sh b/postinstall.sh
index 1d67a3a..1d26bbe 100644
--- a/postinstall.sh
+++ b/postinstall.sh
@@ -1,3 +1,9 @@
+grep -qxF "apt update" /etc/rc.local
+if [ $? -ne 0 ]; then
+  echo "adding apt update to rc.local"
+  sed -i "2s/^/apt update\n/" /etc/rc.local
+fi
+
 install_package() {
     echo "Installing package '$1' via pip3"
     pip3 install "$1"
diff --git a/setup.py b/setup.py
index 34585a6..cbfcd56 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@ else:
 
 setuptools.setup(
     name="complib",
-    version="0.0.4-17",
+    version="0.0.4-19",
     author="F-WuTs",
     author_email="--",
     description="",