diff --git a/README.md b/README.md
index 225f342a2..64db4cc88 100644
--- a/README.md
+++ b/README.md
@@ -23,5 +23,5 @@ The charts are [currently tested](https://devops-ci.elastic.co/job/elastic+helm-
 
 ## Helm versions
 
-While we are checking backward compatibility, the charts are only tested with Helm version mentioned in [helm-tester Dockerfile](helpers/helm-tester/Dockerfile) (currently 2.16.5).
+While we are checking backward compatibility, the charts are only tested with Helm version mentioned in [helm-tester Dockerfile](helpers/helm-tester/Dockerfile) (currently 2.16.6).
 Note that we don't support [Helm 3](https://v3.helm.sh/) version.
diff --git a/helpers/helm-tester/Dockerfile b/helpers/helm-tester/Dockerfile
index d2e1b8e63..66d7dab91 100644
--- a/helpers/helm-tester/Dockerfile
+++ b/helpers/helm-tester/Dockerfile
@@ -1,6 +1,6 @@
 FROM python:3.7
 
-ENV HELM_VERSION=2.16.5
+ENV HELM_VERSION=2.16.6
 
 RUN wget --no-verbose https://storage.googleapis.com/kubernetes-helm/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 c415c5edc..621f9f40e 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=1.15.4
-ENV HELM_VERSION=2.16.5
+ENV HELM_VERSION=2.16.6
 ENV DOCKER_VERSION=18.09.7
 
 RUN yum -y install \