diff --git a/.tool-versions b/.tool-versions
index 7a68e43a..56064ebd 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,5 +1,5 @@
 adr-tools 3.0.0
-golang 1.21.4
+golang 1.21.5
 golangci-lint 1.55.2
 goreleaser 1.21.2
 hadolint 2.12.0
diff --git a/Dockerfile b/Dockerfile
index 17ca2f0b..f64df4aa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21.4-alpine3.18 AS tools
+FROM golang:1.21.5-alpine3.18 AS tools
 
 COPY scripts/tools-golang.sh /tmp/tools-golang.sh