diff --git a/README.md b/README.md
index 7ca667f6..51c1c46a 100644
--- a/README.md
+++ b/README.md
@@ -10,13 +10,13 @@ This module manages Azure Application Insights.
 | Name | Version |
 |------|---------|
 | terraform | >=1.0 |
-| azurerm | >=3.11.0 |
+| azurerm | >=3.11.0, <4.0 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| azurerm | >=3.11.0 |
+| azurerm | >=3.11.0, <4.0 |
 
 ## Resources