diff --git a/README.md b/README.md
index 3ed072f1c..188c27639 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,7 @@ exact versions are defined under `KUBERNETES_VERSIONS` in
 ### Helm versions
 
 While we are checking backward compatibility, the charts are only tested with
-Helm version mentioned in [helm-tester Dockerfile][] (currently 3.4.1).
+Helm version mentioned in [helm-tester Dockerfile][] (currently 3.4.2).
 
 
 ## ECK
diff --git a/helpers/helm-tester/Dockerfile b/helpers/helm-tester/Dockerfile
index 96ad4c483..0a4de30d4 100644
--- a/helpers/helm-tester/Dockerfile
+++ b/helpers/helm-tester/Dockerfile
@@ -1,6 +1,6 @@
 FROM python:3.7
 
-ENV HELM_VERSION=3.4.1
+ENV HELM_VERSION=3.4.2
 
 RUN wget --no-verbose https://get.helm.sh/helm-v${HELM_VERSION}-linux-amd64.tar.gz && \
     tar xfv helm-v${HELM_VERSION}-linux-amd64.tar.gz && \
diff --git a/helpers/terraform/Dockerfile b/helpers/terraform/Dockerfile
index 3540dfb60..a7189fa0b 100644
--- a/helpers/terraform/Dockerfile
+++ b/helpers/terraform/Dockerfile
@@ -3,7 +3,7 @@ FROM centos:7
 ENV VAULT_VERSION 0.9.3
 ENV TERRAFORM_VERSION=0.11.7
 ENV KUBECTL_VERSION=1.16.10
-ENV HELM_VERSION=3.4.1
+ENV HELM_VERSION=3.4.2
 ENV DOCKER_VERSION=18.09.7
 ENV JQ_VERSION=1.6