diff --git a/homeassistant/components/modbus/manifest.json b/homeassistant/components/modbus/manifest.json
index a4187de77ebd15..bef85f1d20d5ee 100644
--- a/homeassistant/components/modbus/manifest.json
+++ b/homeassistant/components/modbus/manifest.json
@@ -6,5 +6,5 @@
   "iot_class": "local_polling",
   "loggers": ["pymodbus"],
   "quality_scale": "gold",
-  "requirements": ["pymodbus==3.5.0"]
+  "requirements": ["pymodbus==3.5.1"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index e50cdb37af3952..6fd67a64038282 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1851,7 +1851,7 @@ pymitv==1.4.3
 pymochad==0.2.0
 
 # homeassistant.components.modbus
-pymodbus==3.5.0
+pymodbus==3.5.1
 
 # homeassistant.components.monoprice
 pymonoprice==0.4
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index b7b227fc1c0274..cc9eeaa2b77026 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1370,7 +1370,7 @@ pymeteoclimatic==0.0.6
 pymochad==0.2.0
 
 # homeassistant.components.modbus
-pymodbus==3.5.0
+pymodbus==3.5.1
 
 # homeassistant.components.monoprice
 pymonoprice==0.4