diff --git a/wingbits_installer.sh b/wingbits_installer.sh
index 60a11ae..098b971 100644
--- a/wingbits_installer.sh
+++ b/wingbits_installer.sh
@@ -33,7 +33,7 @@ mkdir -p /usr/share/graphs1090/installed
 mkdir -p /var/lib/graphs1090/scatter
 
 apt install --no-install-recommends --no-install-suggests -y \
-    git rrdtool wget unzip bash-builtins collectd-core libpython3.10
+    git rrdtool wget unzip bash-builtins collectd-core libpython3.9
 wget --timeout=30 -q -O /tmp/master.zip https://github.com/wiedehopf/graphs1090/archive/master.zip && unzip -q -o master.zip
 cd /tmp/graphs1090-master