diff --git a/Cargo.toml b/Cargo.toml
index c6d0fd0..cc4a4b0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,9 +10,9 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-aiken = "1.0.19-alpha"
-uplc = "1.0.19-alpha"
-aiken-lang = "1.0.19-alpha"
+aiken = "1.0.21-alpha"
+uplc = "1.0.21-alpha"
+aiken-lang = "1.0.21-alpha"
 
 pallas-addresses = "0.18.2"
 pallas-codec = "0.18.2"