diff --git a/Dockerfile b/Dockerfile
index 8bc672e4c2e5c35d2b49bb7e92a0da6dee40146d..7a2bd0e7b51d81e66f06a06af44e9832806cc1f6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,9 +13,13 @@ RUN apt-get update \
  && rm -rf /usr/share/doc/* /usr/share/locales/* /usr/share/man/* \
  && rm -rf /var/lib/apt/lists/*
 
-#RUN curl https://packages.icinga.com/icinga.key | apt-key add - \
-# && DIST=$(awk -F"[)(]+" '/VERSION=/ {print $2}' /etc/os-release) \
-# && echo "deb http://packages.icinga.com/raspbian icinga-${DIST} main" > /etc/apt/sources.list.d/${DIST}-icinga.list
+RUN curl https://packages.icinga.com/icinga.key | \
+    gpg --dearmor -o /usr/share/keyrings/icinga-archive-keyring.gpg
+
+RUN deb [signed-by=/usr/share/keyrings/icinga-archive-keyring.gpg] \
+    https://packages.icinga.com/raspbian icinga-buster main
+ && deb-src [signed-by=/usr/share/keyrings/icinga-archive-keyring.gpg] \
+    https://packages.icinga.com/raspbian icinga-buster main
 
 # Install build deps for Icinga 2 and Icinga Web 2
 RUN apt-get update \