diff --git a/components/gateway/Dockerfile b/components/gateway/Dockerfile
index 4567fb8c7..7c8e889f7 100644
--- a/components/gateway/Dockerfile
+++ b/components/gateway/Dockerfile
@@ -1,4 +1,6 @@
-FROM debian:bullseye-slim AS bootstrap
+# https://apt.opensips.org/packages.php?os=bookworm
+
+FROM debian:bookworm-slim AS bootstrap
 
 USER root
 
@@ -7,13 +9,13 @@ ENV DEBIAN_FRONTEND noninteractive
 ARG OPENSIPS_VERSION=3.3
 ARG OPENSIPS_BUILD=releases
 
-RUN apt-get -y update -qq && apt-get -y install gnupg2 ca-certificates
-RUN apt-key adv --fetch-keys https://apt.opensips.org/pubkey.gpg
-RUN echo "deb https://apt.opensips.org bullseye ${OPENSIPS_VERSION}-${OPENSIPS_BUILD}" > /etc/apt/sources.list.d/opensips.list
-RUN echo "deb https://apt.opensips.org bullseye cli-nightly" > /etc/apt/sources.list.d/opensips-cli.list
-RUN apt-get -y update -qq && apt-get -y install opensips opensips-postgres-module opensips-cli python3-psycopg2 m4
-
-RUN rm -rf /var/lib/apt/lists/*
+RUN apt-get -y update -qq && apt-get -y install gnupg2 ca-certificates curl && \
+    curl https://apt.opensips.org/opensips-org.gpg -o /usr/share/keyrings/opensips-org.gpg && \
+    echo "deb [signed-by=/usr/share/keyrings/opensips-org.gpg] https://apt.opensips.org bookworm ${OPENSIPS_VERSION}-${OPENSIPS_BUILD}" >/etc/apt/sources.list.d/opensips.list && \
+    echo "deb [signed-by=/usr/share/keyrings/opensips-org.gpg] https://apt.opensips.org bookworm cli-nightly" >/etc/apt/sources.list.d/opensips-cli.list && \
+    apt-get -y update -qq && apt-get -y install opensips opensips-postgres-module opensips-cli python3-psycopg2 m4 && \
+    apt-get purge -y --auto-remove curl && \
+    rm -rf /var/lib/apt/lists/*
 
 COPY bootstrap.sh /docker-entrypoint.sh
 
@@ -28,7 +30,7 @@ CMD ["create_db"]
 
 # Build
 
-FROM debian:bullseye-slim AS build
+FROM debian:bookworm-slim AS build
 
 USER root
 
@@ -37,12 +39,11 @@ ENV DEBIAN_FRONTEND noninteractive
 ARG OPENSIPS_VERSION=3.3
 ARG OPENSIPS_BUILD=releases
 
-RUN apt-get -y update -qq && apt-get -y install gnupg2 ca-certificates iproute2
-RUN apt-key adv --fetch-keys https://apt.opensips.org/pubkey.gpg
-RUN echo "deb https://apt.opensips.org bullseye ${OPENSIPS_VERSION}-${OPENSIPS_BUILD}" >/etc/apt/sources.list.d/opensips.list
-RUN apt-get -y update -qq && apt-get -y install opensips opensips-postgres-module opensips-auth-modules netcat jq curl
-
-RUN rm -rf /var/lib/apt/lists/*
+RUN apt-get -y update -qq && apt-get -y install gnupg2 ca-certificates iproute2 && \
+    curl https://apt.opensips.org/opensips-org.gpg -o /usr/share/keyrings/opensips-org.gpg && \
+    echo "deb [signed-by=/usr/share/keyrings/opensips-org.gpg] https://apt.opensips.org bookworm ${OPENSIPS_VERSION}-${OPENSIPS_BUILD}" >/etc/apt/sources.list.d/opensips.list && \
+    apt-get -y update -qq && apt-get -y install opensips opensips-postgres-module opensips-auth-modules netcat jq curl && \
+    rm -rf /var/lib/apt/lists/*
 
 ENTRYPOINT ["/docker-entrypoint.sh"]
 CMD ["opensips"]
@@ -60,4 +61,3 @@ FROM build AS client_gateway
 
 COPY client_gateway/opensips.cfg /etc/opensips/opensips.cfg
 COPY client_gateway/docker-entrypoint.sh /docker-entrypoint.sh
-