diff --git a/promtail/Dockerfile b/promtail/Dockerfile
index b2400e8..e8a36f6 100644
--- a/promtail/Dockerfile
+++ b/promtail/Dockerfile
@@ -7,8 +7,7 @@ ARG YQ_VERSION
 ARG PROMTAIL_VERSION
 
 # Add yq and tzdata (required for the timestamp stage)
-RUN echo "deb http://deb.debian.org/debian bullseye-backports main" >> /etc/apt/sources.list
-RUN apt-get update && apt-get install -t bullseye-backports -qy libsystemd-dev
+RUN apt-get update && apt-get install -qy libsystemd-dev
 RUN set -eux; \
     apt-get update; \
     apt-get install -qy --no-install-recommends \