diff --git a/program/Cargo.toml b/program/Cargo.toml
index 06bb23a..512f690 100644
--- a/program/Cargo.toml
+++ b/program/Cargo.toml
@@ -30,6 +30,6 @@ spl-associated-token-account.workspace = true
 [dev-dependencies]
 bs64 = "0.1.2"
 rand = "0.8.5"
-solana-program-test = "^1.18"
-solana-sdk = "^1.18"
+solana-program-test = "=1.18.17"
+solana-sdk = "=1.18.17"
 tokio = { version = "1.35", features = ["full"] }