diff --git a/Dockerfile b/Dockerfile
index 8ec9ffb..2414a8d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,6 @@ FROM rust:1.69-alpine
 RUN mkdir webmention-filer
 COPY src webmention-filer/src
 COPY Cargo.toml webmention-filer/Cargo.toml
-COPY Cargo.lock webmention-filer/Cargo.lock
 
 WORKDIR webmention-filer
 RUN cargo build --release