diff --git a/contracts/split/src/lib.rs b/contracts/split/src/lib.rs
index 27a9b1f..32e3e1b 100644
--- a/contracts/split/src/lib.rs
+++ b/contracts/split/src/lib.rs
@@ -89,6 +89,26 @@ pub struct SplitContract;
 
 #[contractimpl]
 impl SplitContract {
+    /// Set the contract admin. Can only be called once.
+    pub fn initialize(env: Env, admin: Address) {
+        assert!(
+            !env.storage().instance().has(&admin_key()),
+            "already initialized"
+        );
+        env.storage().instance().set(&admin_key(), &admin);
+    }
+
+    /// Upgrade the contract WASM. Requires admin auth.
+    pub fn upgrade(env: Env, new_wasm_hash: BytesN<32>) {
+        let admin: Address = env
+            .storage()
+            .instance()
+            .get(&admin_key())
+            .expect("not initialized");
+        admin.require_auth();
+        env.deployer().update_current_contract_wasm(new_wasm_hash);
+    }
+
     /// Create a new invoice.
     ///
     /// # Arguments