diff --git a/fly/Dockerfile b/fly/Dockerfile
index ca20beb..6e6146c 100644
--- a/fly/Dockerfile
+++ b/fly/Dockerfile
@@ -7,9 +7,10 @@ COPY --from=docker.io/tailscale/tailscale:stable \
     /usr/local/bin/tailscale /usr/local/bin/tailscale
 
 RUN mkdir -p /var/run/tailscale /var/lib/tailscale \
-    && apk add --no-cache iptables ip6tables
+    && apk add --no-cache iptables ip6tables \
+    && apk add --no-cache libc6-compat
 
-# Copy Alloy binary from official image
+# Copy Alloy binary from official image (Ubuntu-based, needs libc6-compat)
 COPY --from=docker.io/grafana/alloy:v1.5.1 \
     /bin/alloy /usr/local/bin/alloy