diff --git a/promtail/Dockerfile b/promtail/Dockerfile
index decb3aa..a368109 100644
--- a/promtail/Dockerfile
+++ b/promtail/Dockerfile
@@ -34,7 +34,7 @@ RUN set -eux; \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*; \
     curl -s -J -L -o /tmp/promtail.zip \
         "https://github.com/grafana/loki/releases/download/v${PROMTAIL_VERSION}/promtail-linux-${BINARCH}.zip"; \
-    unzip /tmp/promtail.tar -d /usr/bin; \
+    unzip /tmp/promtail.zip -d /usr/bin; \
     mv /usr/bin/promtail-linux-${BINARCH} /usr/bin/promtail; \
     chmod +x /usr/bin/promtail; \
     rm /tmp/promtail.zip