diff --git a/Dockerfile b/Dockerfile
index afdbd7f..3c16334 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,10 +5,10 @@ ARG FASTNETMON_DISTR_NAME
 
 ENV DEBIAN_FRONTEND=noninteractive
 
-COPY resources/fastnetmon.asc /etc/apt/trusted.gpg.d/fastnetmon.asc
+COPY resources/fastnetmon_dearmor.gpg /usr/share/keyrings/fastnetmon_dearmor.gpg
 RUN apt-get update && \
     apt-get install --no-install-recommends -y ca-certificates wget systemd iproute2 gpg msmtp pwgen curl strace aggregate whois tcpdump mtr-tiny && \
-    echo "deb [arch=amd64] https://repo.fastnetmon.com/fastnetmon_ubuntu_${FASTNETMON_DISTR_NAME} ${FASTNETMON_DISTR_NAME} fastnetmon" > /etc/apt/sources.list.d/fastnetmon.list &&\
+    echo "deb [arch=amd64 signed-by=/usr/share/keyrings/fastnetmon_dearmor.gpg] https://${FASTNETMON_DISTR_NAME}.ubuntu.repo.fastnetmon.com stable main" > /etc/apt/sources.list.d/fastnetmon.list &&\
     apt-get update && \
     apt-get install -y fastnetmon=$FASTNETMON_VERSION && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
diff --git a/resources/fastnetmon_dearmor.gpg b/resources/fastnetmon_dearmor.gpg
new file mode 100644
index 0000000..91a755b
Binary files /dev/null and b/resources/fastnetmon_dearmor.gpg differ