diff --git a/kairos-prover/kairos-circuit-logic/Cargo.toml b/kairos-prover/kairos-circuit-logic/Cargo.toml
index 320292ce..fa32b3f3 100644
--- a/kairos-prover/kairos-circuit-logic/Cargo.toml
+++ b/kairos-prover/kairos-circuit-logic/Cargo.toml
@@ -21,7 +21,7 @@ serde = { version = "1", default-features = false, features = ["derive", "alloc"
 sha2 = { version = "0.10", default-features = false }
 borsh = { version = "1", default-features = false, features = ["derive"], optional = true }
 
-casper-event-standard = { version = "0.5", optional = true }
+casper-event-standard = { git = "https://github.com/cspr-rad/casper-event-standard", branch = "release-2.0.0-rc4", optional = true }
 
 # dev dependencies enabled by arbitrary
 test-strategy = { version = "0.3", optional = true }