diff --git a/ohkami/Cargo.toml b/ohkami/Cargo.toml
index 0d052bf3..f09927de 100644
--- a/ohkami/Cargo.toml
+++ b/ohkami/Cargo.toml
@@ -25,7 +25,7 @@ tokio         = { version = "1",   optional = true, features = ["rt", "net", "ti
 async-std     = { version = "1",   optional = true }
 smol          = { version = "2",   optional = true }
 glommio       = { version = "0.9", optional = true }
-worker        = { version = "0.3", optional = true }
+worker        = { version = "0.4", optional = true }
 
 byte_reader   = { workspace = true }
 serde         = { workspace = true }