diff --git a/keptn-cert-manager/Dockerfile b/keptn-cert-manager/Dockerfile
index 77fbb7925c..dd90398ca7 100644
--- a/keptn-cert-manager/Dockerfile
+++ b/keptn-cert-manager/Dockerfile
@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM --platform=$BUILDPLATFORM golang:1.21.8-alpine3.19 AS builder
+FROM --platform=$BUILDPLATFORM golang:1.21.9-alpine3.19 AS builder
 
 ENV CGO_ENABLED=0
 
diff --git a/lifecycle-operator/Dockerfile b/lifecycle-operator/Dockerfile
index 316e5ac294..0e7fe33027 100644
--- a/lifecycle-operator/Dockerfile
+++ b/lifecycle-operator/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:1.21.8-alpine3.19 AS builder
+FROM --platform=$BUILDPLATFORM golang:1.21.9-alpine3.19 AS builder
 
 ENV CGO_ENABLED=0
 
diff --git a/metrics-operator/Dockerfile b/metrics-operator/Dockerfile
index 491d017d05..34fb721286 100644
--- a/metrics-operator/Dockerfile
+++ b/metrics-operator/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:1.21.8-alpine3.19 AS builder
+FROM --platform=$BUILDPLATFORM golang:1.21.9-alpine3.19 AS builder
 
 ENV CGO_ENABLED=0
 
diff --git a/scheduler/Dockerfile b/scheduler/Dockerfile
index 26ed8ee053..b171161b2d 100644
--- a/scheduler/Dockerfile
+++ b/scheduler/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:1.21.8-alpine3.19 AS builder
+FROM --platform=$BUILDPLATFORM golang:1.21.9-alpine3.19 AS builder
 
 ENV CGO_ENABLED=0