diff --git a/Dockerfile b/Dockerfile
index cd42eadd2..a0b483c95 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ ARG DEFAULT_CONFTEST_VERSION=0.46.0
 
 # Stage 1: build artifact and download deps
 
-FROM golang:1.21.4-alpine AS builder
+FROM golang:1.21.5-alpine AS builder
 
 ARG ATLANTIS_VERSION=dev
 ENV ATLANTIS_VERSION=${ATLANTIS_VERSION}
diff --git a/testing/Dockerfile b/testing/Dockerfile
index 00b13a9d3..69e0a0a94 100644
--- a/testing/Dockerfile
+++ b/testing/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21.4
+FROM golang:1.21.5
 
 RUN apt-get update && apt-get --no-install-recommends -y install unzip \
     && apt-get clean \