diff --git a/containers/kingfisher/Dockerfile b/containers/kingfisher/Dockerfile
index 5aff665..32a5014 100644
--- a/containers/kingfisher/Dockerfile
+++ b/containers/kingfisher/Dockerfile
@@ -41,7 +41,7 @@ RUN set -e; \
     done; \
     echo "Build tree ready at $(git rev-parse --short HEAD)"
 
-RUN cargo build --release -j 4 \
+RUN cargo build --release \
     && install -m 0755 target/release/kingfisher /usr/local/bin/kingfisher
 
 # Quick smoke-test