diff --git a/docker/Dockerfile b/docker/Dockerfile
index 878def33..393d4d01 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -63,7 +63,7 @@ ARG TARGETARCH
 ENV TARGETARCH=${TARGETARCH}
 
 # renovate: datasource=github-releases depName=cosign packageName=sigstore/cosign
-ARG COSIGN_VERSION=v2.5.3
+ARG COSIGN_VERSION=v2.6.0
 
 RUN ./install-cosign.sh $COSIGN_VERSION