diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 7b590da3..555201e8 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -9,8 +9,10 @@ on:
     branches:
       - main
     paths:
-    - 'lib/pklib/**'
+    - 'lib/libpk/**'
     - 'services/api/**'
+    - '.github/workflows/rust.yml'
+    - 'Dockerfile.rust'
 
 jobs:
   deploy:
diff --git a/Dockerfile.rust b/Dockerfile.rust
index 092cd9cb..6453ffeb 100644
--- a/Dockerfile.rust
+++ b/Dockerfile.rust
@@ -2,7 +2,7 @@ FROM alpine:latest AS builder
 
 WORKDIR /build
 
-RUN apk add rustup build-base
+RUN apk add rustup build-base protoc
 # todo: arm64 target
 RUN rustup-init --default-host x86_64-unknown-linux-musl --default-toolchain stable --profile default -y