diff --git a/Cargo.toml b/Cargo.toml
index 66c5a1cd3d3..330f90c9d02 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,7 +36,7 @@ array-init = { version = "2.0", default-features = false }
 blake2 = { version = "0.10" }
 cargo_metadata = { version = "0.17.0" }
 cfg-if = { version = "1.0" }
-contract-build = { version = "3.1.0" }
+contract-build = { version = "4.0.0-alpha" }
 derive_more = { version = "0.99.17", default-features = false }
 either = { version = "1.5", default-features = false }
 funty = { version = "2.0.0" }