diff --git a/Cargo.lock b/Cargo.lock
index 9b774800435f92c9719029565386cbbc2ee99a9d..a345463d25f445baec00f0c482dabf877e3ec34f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1555,9 +1555,9 @@ dependencies = [
 
 [[package]]
 name = "ink_metadata"
-version = "3.0.1"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fbe60facb61034f78367fc30dc56bd5e385487ce60aefd0b1727e6b680446dc"
+checksum = "f93ad130f7a2645f22a6106b87bc9dd0e512f110b4e98da6960e4fc3d4daa766"
 dependencies = [
  "derive_more",
  "impl-serde",
@@ -1569,18 +1569,18 @@ dependencies = [
 
 [[package]]
 name = "ink_prelude"
-version = "3.0.1"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4917e51ffd6374c7be1cb030e89607a7b9384f331d47bfa7589750ff8f27fd7f"
+checksum = "90a9133adeaa0d07bb1f29b9d4a0db6f0399e34ff63d5c9f1c008cde54f4db24"
 dependencies = [
  "cfg-if",
 ]
 
 [[package]]
 name = "ink_primitives"
-version = "3.0.1"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1793c77ab7354147a4a0de3e0a77a31a29bf6fbd5f97192b8202c3ce2587699"
+checksum = "49a45f65f373fa1a2d91b4293bb4dcf5858b5505d0aaa800b19d6fcd5b36f100"
 dependencies = [
  "cfg-if",
  "ink_prelude",
diff --git a/Cargo.toml b/Cargo.toml
index d03798db4dd70354309202ea69a2e66b7ad5ca81..f17125691e6e3b0b847027613d058dac6e05a63f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,7 +49,7 @@ regex = "1.5.5"
 
 # dependencies for extrinsics (deploying and calling a contract)
 async-std = { version = "1.11.0", features = ["attributes", "tokio1"] }
-ink_metadata = { version = "3.0", features = ["derive"] }
+ink_metadata = { version = "3.1", features = ["derive"] }
 ink_env = "3.0"
 scale-info = { version = "2.1.2", default-features = false, features = ["derive"] }
 sp-core = "6.0.0"