diff --git a/cms/envs/common.py b/cms/envs/common.py
index b2b7dcda2a..5fa2b88f8c 100644
--- a/cms/envs/common.py
+++ b/cms/envs/common.py
@@ -1357,6 +1357,8 @@ INSTALLED_APPS = [
     'openedx.features.discounts',
     'experiments',
 
+    # so sample_task is available to celery workers
+    'openedx.core.djangoapps.heartbeat',
 ]
 
 
diff --git a/lms/envs/common.py b/lms/envs/common.py
index fd14163cf2..696f8f2cfe 100644
--- a/lms/envs/common.py
+++ b/lms/envs/common.py
@@ -2501,7 +2501,10 @@ INSTALLED_APPS = [
 
     # edx-drf-extensions
     'csrf.apps.CsrfAppConfig',  # Enables frontend apps to retrieve CSRF tokens.
-    'xss_utils'
+    'xss_utils',
+
+    # so sample_task is available to celery workers
+    'openedx.core.djangoapps.heartbeat',
 ]
 
 ######################### CSRF #########################################