diff --git a/.build.yml b/.build.yml
index c46f8a8..83bef50 100644
--- a/.build.yml
+++ b/.build.yml
@@ -7,6 +7,7 @@ environment:
 packages:
   - cargo
   - sqlite-devel
+  - protobuf-compiler
 sources:
   - https://git.sr.ht/~gheartsfield/nostr-rs-relay/
 shell: false
diff --git a/Dockerfile b/Dockerfile
index ace6944..1cd0b89 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,7 +22,7 @@ FROM docker.io/library/debian:bullseye-slim
 ARG APP=/usr/src/app
 ARG APP_DATA=/usr/src/app/db
 RUN apt-get update \
-    && apt-get install -y ca-certificates tzdata sqlite3 libc6 \
+    && apt-get install -y ca-certificates tzdata sqlite3 protobuf-compiler libc6 \
     && rm -rf /var/lib/apt/lists/*
 
 EXPOSE 8080