diff --git a/contracts/Cargo.toml b/contracts/Cargo.toml
index 5007a5f4..0a86b589 100644
--- a/contracts/Cargo.toml
+++ b/contracts/Cargo.toml
@@ -27,5 +27,5 @@ codegen-units = 1
 lto = true
 
 [workspace.dependencies]
-soroban-sdk = "21.7.7"
+soroban-sdk = "27.0.3"
 arbitrary = { version = "1.3", features = ["derive"] }
diff --git a/contracts/subscription/Cargo.toml b/contracts/subscription/Cargo.toml
index 6e8642a2..fab46e82 100644
--- a/contracts/subscription/Cargo.toml
+++ b/contracts/subscription/Cargo.toml
@@ -13,10 +13,10 @@ crate-type = ["cdylib", "rlib"]
 serde = "1.0"
 
 [dependencies]
-soroban-sdk = "21.0.0"
+soroban-sdk = "27.0.3"
 subtrackr-types = { path = "../types" }
 
 [dev-dependencies]
-soroban-sdk = { version = "21.0.0", features = ["testutils"] }
+soroban-sdk = { version = "27.0.3", features = ["testutils"] }
 subtrackr-proxy = { path = "../proxy" }
 subtrackr-storage = { path = "../storage" }
diff --git a/contracts/types/Cargo.toml b/contracts/types/Cargo.toml
index e2a81f73..20674adb 100644
--- a/contracts/types/Cargo.toml
+++ b/contracts/types/Cargo.toml
@@ -11,4 +11,4 @@ path = "src/lib.rs"
 crate-type = ["rlib"]
 
 [dependencies]
-soroban-sdk = "21.7.7"
+soroban-sdk = "27.0.3"