diff --git a/Dockerfile b/Dockerfile
index 85d68438cb8..e58e1ad1963 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@ RUN apk add --no-cache bash \
 	tini
 
 # install cosign
-COPY --from=gcr.io/projectsigstore/cosign:v1.12.0@sha256:880cc3ec8088fa59a43025d4f20961e8abc7c732e276a211cfb8b66793455dd0 /ko-app/cosign /usr/local/bin/cosign
+COPY --from=gcr.io/projectsigstore/cosign:v1.12.1@sha256:ac8e08a2141e093f4fd7d1d0b05448804eb3771b66574b13ad73e31b460af64d /ko-app/cosign /usr/local/bin/cosign
 
 ENTRYPOINT ["/sbin/tini", "--", "/entrypoint.sh"]
 CMD [ "-h" ]