diff --git a/CHANGELOG.next.asciidoc b/CHANGELOG.next.asciidoc
index d43fc05cb72..b29fb180c44 100644
--- a/CHANGELOG.next.asciidoc
+++ b/CHANGELOG.next.asciidoc
@@ -165,6 +165,7 @@ https://github.com/elastic/beats/compare/v8.2.0\...main[Check the HEAD diff]
 
 
 *Heartbeat*
+- Bump node.js version for synthetics to 16.15.0. {pull}31675[31675]
 
 *Metricbeat*
 
diff --git a/dev-tools/packaging/templates/docker/Dockerfile.elastic-agent.tmpl b/dev-tools/packaging/templates/docker/Dockerfile.elastic-agent.tmpl
index f4e31cd3b01..f3316051fa8 100644
--- a/dev-tools/packaging/templates/docker/Dockerfile.elastic-agent.tmpl
+++ b/dev-tools/packaging/templates/docker/Dockerfile.elastic-agent.tmpl
@@ -187,7 +187,7 @@ USER {{ .user }}
 # Setup synthetics env vars
 ENV ELASTIC_SYNTHETICS_CAPABLE=true
 ENV SUITES_DIR={{ $beatHome }}/suites
-ENV NODE_VERSION=14.17.5
+ENV NODE_VERSION=16.15.0
 ENV PATH="$NODE_PATH/node/bin:$PATH"
 # Install the latest version of @elastic/synthetics forcefully ignoring the previously
 # cached node_modules, heartbeat then calls the global executable to run test suites
diff --git a/dev-tools/packaging/templates/docker/Dockerfile.tmpl b/dev-tools/packaging/templates/docker/Dockerfile.tmpl
index ac05bebd48e..06cce5a13b0 100644
--- a/dev-tools/packaging/templates/docker/Dockerfile.tmpl
+++ b/dev-tools/packaging/templates/docker/Dockerfile.tmpl
@@ -160,7 +160,7 @@ USER {{ .user }}
 # Setup synthetics env vars
 ENV ELASTIC_SYNTHETICS_CAPABLE=true
 ENV SUITES_DIR={{ $beatHome }}/suites
-ENV NODE_VERSION=14.17.5
+ENV NODE_VERSION=16.15.0
 ENV PATH="$NODE_PATH/node/bin:$PATH"
 # Install the latest version of @elastic/synthetics forcefully ignoring the previously
 # cached node_modules, heartbeat then calls the global executable to run test suites