diff --git a/packages/api/Cargo.toml b/packages/api/Cargo.toml
index 5989316a..da243c8b 100644
--- a/packages/api/Cargo.toml
+++ b/packages/api/Cargo.toml
@@ -18,7 +18,7 @@ crate-type = ["cdylib"]
 [dependencies]
 wasmer = { version = "2.1.1", default-features = false, features = ["wat", "universal", "dylib", "compiler"] }
 wasmer-engines = { path = "../engines/" }
-wasmer-types = "2.1.1"
+wasmer-types = "4.2.0"
 wasmer-wasi = "2.1.1"
 pyo3 = { version = "0.14", features = ["extension-module", "auto-initialize"] }
 wat = "1.0"