diff --git a/docker/Dockerfile b/docker/Dockerfile
index 0718e0b..e8bef73 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -12,6 +12,7 @@ FROM smallstep/step-cli:latest
 COPY --from=builder /src/bin/step-kms-plugin /usr/local/bin/step-kms-plugin
 
 USER root
+RUN apk upgrade --no-cache
 RUN apk add --no-cache pcsc-lite pcsc-lite-libs
 USER step
 
diff --git a/docker/Dockerfile.cloud b/docker/Dockerfile.cloud
index f9eee9f..452d75c 100644
--- a/docker/Dockerfile.cloud
+++ b/docker/Dockerfile.cloud
@@ -8,6 +8,9 @@ RUN make V=1 CGO_ENABLED=0 build
 
 FROM smallstep/step-cli:latest
 
+USER root
+RUN apk upgrade --no-cache
+
 COPY --from=builder /src/bin/step-kms-plugin /usr/local/bin/step-kms-plugin
 
 USER step
diff --git a/docker/Dockerfile.debian b/docker/Dockerfile.debian
index e1a6e11..7036166 100644
--- a/docker/Dockerfile.debian
+++ b/docker/Dockerfile.debian
@@ -13,6 +13,7 @@ COPY --from=builder /src/bin/step-kms-plugin /usr/local/bin/step-kms-plugin
 
 USER root
 RUN apt-get update
+RUN apt-get upgrade -y
 RUN apt-get install -y --no-install-recommends pcscd libpcsclite1 p11-kit p11-kit-modules
 USER step