diff --git a/homeassistant/components/caldav/manifest.json b/homeassistant/components/caldav/manifest.json
index 619523ae7a1..e0d598e6493 100644
--- a/homeassistant/components/caldav/manifest.json
+++ b/homeassistant/components/caldav/manifest.json
@@ -6,5 +6,5 @@
   "documentation": "https://www.home-assistant.io/integrations/caldav",
   "iot_class": "cloud_polling",
   "loggers": ["caldav", "vobject"],
-  "requirements": ["caldav==1.3.8"]
+  "requirements": ["caldav==1.3.9"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 574d6fdfd64..38d1f0613bf 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -624,7 +624,7 @@ buienradar==1.0.5
 cached_ipaddress==0.3.0
 
 # homeassistant.components.caldav
-caldav==1.3.8
+caldav==1.3.9
 
 # homeassistant.components.circuit
 circuit-webhook==1.0.1
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 609bdb62145..06e432c8a65 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -523,7 +523,7 @@ buienradar==1.0.5
 cached_ipaddress==0.3.0
 
 # homeassistant.components.caldav
-caldav==1.3.8
+caldav==1.3.9
 
 # homeassistant.components.coinbase
 coinbase==2.1.0