diff --git a/Dockerfile b/Dockerfile
index 77f4cbcaf8..34c45df28f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -60,7 +60,7 @@ RUN AVAILABLE_TERRAFORM_VERSIONS="1.0.11 1.1.9 1.2.9 1.3.9 ${DEFAULT_TERRAFORM_V
     ln -s "/usr/local/bin/tf/versions/${DEFAULT_TERRAFORM_VERSION}/terraform" /usr/local/bin/terraform
 
 # renovate: datasource=github-releases depName=open-policy-agent/conftest
-ENV DEFAULT_CONFTEST_VERSION=0.39.2
+ENV DEFAULT_CONFTEST_VERSION=0.40.0
 
 RUN AVAILABLE_CONFTEST_VERSIONS="${DEFAULT_CONFTEST_VERSION}" && \
     case "${TARGETPLATFORM}" in \
diff --git a/Dockerfile.dev b/Dockerfile.dev
index 22261d9611..f3b917db70 100644
--- a/Dockerfile.dev
+++ b/Dockerfile.dev
@@ -2,6 +2,6 @@ FROM ghcr.io/runatlantis/atlantis:latest
 COPY atlantis /usr/local/bin/atlantis
 # TODO: remove this once we get this in the base image
 # renovate: datasource=github-releases depName=open-policy-agent/conftest
-ENV DEFAULT_CONFTEST_VERSION=0.39.2
+ENV DEFAULT_CONFTEST_VERSION=0.40.0
 
 WORKDIR /atlantis/src