diff --git a/Cargo.toml b/Cargo.toml
index 2fde966..ad4862c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ test = true
 [dependencies]
 cfg-if = "1.0"
 unicase = { version = "2.6", optional = true }
-ordered-multimap = "0.6"
+ordered-multimap = "0.7"
 
 [features]
 default = []