diff --git a/ibc-testkit/Cargo.toml b/ibc-testkit/Cargo.toml
index a44ccc00e..7fbb86d03 100644
--- a/ibc-testkit/Cargo.toml
+++ b/ibc-testkit/Cargo.toml
@@ -17,7 +17,7 @@ description = """
 
 [dependencies]
 # external dependencies
-bon             = { version = "2.3.0" }
+bon             = { version = "3.1.0" }
 borsh           = { workspace = true, optional = true }
 derive_more     = { workspace = true }
 displaydoc      = { workspace = true }