diff --git a/README.md b/README.md
index 409e485..d03a624 100644
--- a/README.md
+++ b/README.md
@@ -606,7 +606,7 @@ Find similar items.
 
 ```ruby
 product = Product.first
-product.similar(fields: ["name"])
+product.similar(fields: ["name"], where: {size: "12 oz"})
 ```
 
 ### Geospatial Searches
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libgit2 0.21.0