diff --git a/docs/src/api/class-locatorassertions.md b/docs/src/api/class-locatorassertions.md
index 20e7c3f0fe..cf78c6ce95 100644
--- a/docs/src/api/class-locatorassertions.md
+++ b/docs/src/api/class-locatorassertions.md
@@ -244,6 +244,12 @@ Attribute name.
 
 Expected attribute value.
 
+### option: LocatorAssertions.NotToHaveAttribute.ignoreCase
+* since: v1.40
+- `ignoreCase` <[boolean]>
+
+Whether to perform case-insensitive match. [`option: ignoreCase`] option takes precedence over the corresponding regular expression flag if specified.
+
 ### option: LocatorAssertions.NotToHaveAttribute.timeout = %%-csharp-java-python-assertions-timeout-%%
 * since: v1.18