diff --git a/Dockerfile b/Dockerfile
index ee06937..7bfe0f6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,7 +30,7 @@ RUN find /newroot -newermt "@${SOURCE_DATE_EPOCH}" -writable \
 
 FROM scratch
 
-LABEL org.opencontainers.image.source https://github.com/tkhq/ecr-proxy
+LABEL org.opencontainers.image.source=https://github.com/tkhq/ecr-proxy
 
 COPY --from=builder /newroot /