diff --git a/prometheus/defaults.yaml b/prometheus/defaults.yaml
index 48b0a9f..f1bf70e 100644
--- a/prometheus/defaults.yaml
+++ b/prometheus/defaults.yaml
@@ -12,10 +12,10 @@ prometheus:
         local_path: /var/lib/prometheus/metrics
       url: https://prometheus.io/docs/introduction/overview/
   alertmanager:
-    version: 0.15.3.linux-amd64
+    version: 0.17.0.linux-amd64
     install_dir: /opt
-    source: https://github.com/prometheus/alertmanager/releases/download/v0.15.3/alertmanager-0.15.3.linux-amd64.tar.gz
-    source_hash: https://github.com/prometheus/alertmanager/releases/download/v0.15.3/sha256sums.txt
+    source: https://github.com/prometheus/alertmanager/releases/download/v0.17.0/alertmanager-0.17.0.linux-amd64.tar.gz
+    source_hash: https://github.com/prometheus/alertmanager/releases/download/v0.17.0/sha256sums.txt
     args:
       config_file: /etc/alertmanager/alertmanager.yml
       storage: