diff --git a/cf-app/mta.yaml b/cf-app/mta.yaml
index 4143e3d..716c38d 100644
--- a/cf-app/mta.yaml
+++ b/cf-app/mta.yaml
@@ -30,5 +30,6 @@ modules:
       health-check-type: http #http/port/process
       health-check-http-endpoint: "/index" # the http route pinged
       health-check-timeout: 180 #seconds
+      health-check-interval: 15 #seconds; how often CF runs the liveness check
       app-features:
         ssh: true
diff --git a/cf-app/mtad.yaml b/cf-app/mtad.yaml
index d0064ad..6b6d28a 100644
--- a/cf-app/mtad.yaml
+++ b/cf-app/mtad.yaml
@@ -30,5 +30,6 @@ modules:
       health-check-type: http #http/port/process
       health-check-http-endpoint: "/index" # the http route pinged
       health-check-timeout: 180 #seconds
+      health-check-interval: 15 #seconds; how often CF runs the liveness check
       app-features:
         ssh: true