diff --git a/Dockerfile.debian b/Dockerfile.debian
index d5568c82a596f34d8ed1f5413e600a8ad4654a5d..1702b4502a416b351f6ce0a0c6f256b136e50f02 100644
--- a/Dockerfile.debian
+++ b/Dockerfile.debian
@@ -23,7 +23,7 @@ RUN apt-get update && apt-get install -y \
   && rm -rf /var/lib/apt/lists/*
 
 # NOTE: cosign is not yet available in the debian apt sources
-ARG COSIGN_VERSION=2.4.3
+ARG COSIGN_VERSION=2.5.0
 WORKDIR /tmp
 RUN wget https://github.com/sigstore/cosign/releases/download/v${COSIGN_VERSION}/cosign_${COSIGN_VERSION}_${TARGETARCH}.deb && \
     dpkg -i *.deb && \