diff --git a/Dockerfile b/Dockerfile
index 1c38988..41c2a8e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ COPY src webmention-filer/src
 COPY Cargo.toml webmention-filer/Cargo.toml
 
 WORKDIR webmention-filer
+RUN apk add musl-dev openssl-dev
 RUN cargo build --release
 
 FROM alpine