diff --git a/Cargo.toml b/Cargo.toml
index d0fb4ac89..52747f497 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -39,7 +39,7 @@ futures = "0.3"
 
 # Conversion
 frunk = { version = "0.3.0", optional = true }
-frunk_derives = { version = "0.3.0", optional = true }
+frunk_derives = { version = "0.4.0", optional = true }
 frunk_core = { version = "0.3.0", optional = true }
 frunk-enum-derive = { version = "0.2.1", optional = true }
 frunk-enum-core = { version = "0.2.1", optional = true }