diff --git a/.github/workflows/cosmos-sdk-proto.yml b/.github/workflows/cosmos-sdk-proto.yml
index 98d12b1d..b9f63fb0 100644
--- a/.github/workflows/cosmos-sdk-proto.yml
+++ b/.github/workflows/cosmos-sdk-proto.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.63.0 # MSRV
+          - 1.65.0 # MSRV
         target:
           - x86_64-unknown-linux-gnu
           - wasm32-unknown-unknown
@@ -41,7 +41,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.63.0 # MSRV
+          - 1.65.0 # MSRV
           - stable
     steps:
       - uses: actions/checkout@v1
diff --git a/.github/workflows/cosmrs.yml b/.github/workflows/cosmrs.yml
index 848ec416..8be3e301 100644
--- a/.github/workflows/cosmrs.yml
+++ b/.github/workflows/cosmrs.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.63.0 # MSRV
+          - 1.65.0 # MSRV
         target:
           - x86_64-unknown-linux-gnu
           - wasm32-unknown-unknown
@@ -42,7 +42,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.63.0 # MSRV
+          - 1.65.0 # MSRV
           - stable
     steps:
       - uses: actions/checkout@v1
diff --git a/.github/workflows/workspace.yml b/.github/workflows/workspace.yml
index 9b1b420a..e00a6c63 100644
--- a/.github/workflows/workspace.yml
+++ b/.github/workflows/workspace.yml
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.63.0
+          toolchain: 1.65.0
           components: rustfmt
       - run: cargo fmt --all -- --check
 
@@ -30,6 +30,6 @@ jobs:
       - uses: actions/checkout@v2
       - uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.63.0
+          toolchain: 1.65.0
           components: clippy
       - run: cargo clippy --all --all-features -- -D warnings
diff --git a/Cargo.lock b/Cargo.lock
index 7d002923..19ac83ce 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -103,9 +103,9 @@ dependencies = [
 
 [[package]]
 name = "base16ct"
-version = "0.1.1"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349a06037c7bf932dd7e7d1f653678b2038b9ad46a74102f1fc7bd7872678cce"
+checksum = "4c7f02d4ea65f2c1853089ffd8d2787bdbc63de2f0d29dedbcf8ccdfa0ccd4cf"
 
 [[package]]
 name = "base64"
@@ -121,9 +121,9 @@ checksum = "8c3c1a368f70d6cf7302d78f8f7093da241fb8e8807c05cc9e51a125895a6d5b"
 
 [[package]]
 name = "bip32"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b30ed1d6f8437a487a266c8293aeb95b61a23261273e3e02912cdb8b68bf798b"
+checksum = "7e40748d60a3296653e45e87e64c6989aebfad607bccce59cc4156c5d81b2f70"
 dependencies = [
  "bs58",
  "hmac",
@@ -267,9 +267,9 @@ dependencies = [
 
 [[package]]
 name = "crypto-bigint"
-version = "0.4.9"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef2b4b23cddf68b89b8f8069890e8c270d54e2d5fe1b143820234805e4cb17ef"
+checksum = "7c2538c4e68e52548bacb3e83ac549f903d44f011ac9d5abb5e132e67d0808f7"
 dependencies = [
  "generic-array",
  "rand_core",
@@ -311,9 +311,9 @@ dependencies = [
 
 [[package]]
 name = "der"
-version = "0.6.1"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1a467a65c5e759bce6e65eaf91cc29f466cdc57cb65777bd646872a8a1fd4de"
+checksum = "82b10af9f9f9f2134a42d3f8aa74658660f2e0234b0eb81bd171df8aa32779ed"
 dependencies = [
  "const-oid",
  "zeroize",
@@ -335,17 +335,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8168378f4e5023e7218c89c891c0fd8ecdb5e5e4f18cb78f38cf245dd021e76f"
 dependencies = [
  "block-buffer 0.10.4",
+ "const-oid",
  "crypto-common",
  "subtle",
 ]
 
 [[package]]
 name = "ecdsa"
-version = "0.14.8"
+version = "0.16.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "413301934810f597c1d19ca71c8710e99a3f1ba28a0d2ebc01551a2daeea3c5c"
+checksum = "a48e5d537b8a30c0b023116d981b16334be1485af7ca68db3a2b7024cbc957fd"
 dependencies = [
  "der",
+ "digest 0.10.6",
  "elliptic-curve",
  "rfc6979",
  "signature",
@@ -353,10 +355,11 @@ dependencies = [
 
 [[package]]
 name = "ed25519"
-version = "1.5.3"
+version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91cff35c70bba8a626e3185d8cd48cc11b5437e1a5bcd15b9b5fa3c64b6dfee7"
+checksum = "5fb04eee5d9d907f29e80ee6b0e78f7e2c82342c63e3580d8c4f69d9d5aad963"
 dependencies = [
+ "pkcs8",
  "signature",
 ]
 
@@ -381,13 +384,12 @@ checksum = "7fcaabb2fef8c910e7f4c7ce9f67a1283a1715879a7c230ca9d6d1ae31f16d91"
 
 [[package]]
 name = "elliptic-curve"
-version = "0.12.3"
+version = "0.13.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7bb888ab5300a19b8e5bceef25ac745ad065f3c9f7efc6de1b91958110891d3"
+checksum = "75c71eaa367f2e5d556414a8eea812bc62985c879748d6403edabd9cb03f16e7"
 dependencies = [
  "base16ct",
  "crypto-bigint",
- "der",
  "digest 0.10.6",
  "ff",
  "generic-array",
@@ -441,9 +443,9 @@ dependencies = [
 
 [[package]]
 name = "ff"
-version = "0.12.1"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d013fc25338cc558c5c2cfbad646908fb23591e2404481826742b651c9af7160"
+checksum = "ded41244b729663b1e574f1b4fb731469f69f79c17667b5d776b16cda0479449"
 dependencies = [
  "rand_core",
  "subtle",
@@ -577,6 +579,7 @@ checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
 dependencies = [
  "typenum",
  "version_check",
+ "zeroize",
 ]
 
 [[package]]
@@ -594,9 +597,9 @@ dependencies = [
 
 [[package]]
 name = "group"
-version = "0.12.1"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5dfbfb3a6cfbd390d5c9564ab283a0349b9b9fcd46a706c1eb10e0db70bfbac7"
+checksum = "f0f9ef7462f7c099f518d754361858f86d8a07af53ba9af0fe635bbccb151a63"
 dependencies = [
  "ff",
  "rand_core",
@@ -874,24 +877,16 @@ dependencies = [
 
 [[package]]
 name = "k256"
-version = "0.11.6"
+version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72c1e0b51e7ec0a97369623508396067a486bd0cbed95a2659a4b863d28cfc8b"
+checksum = "cadb76004ed8e97623117f3df85b17aaa6626ab0b0831e6573f104df16cd1bcc"
 dependencies = [
  "cfg-if",
  "ecdsa",
  "elliptic-curve",
+ "once_cell",
  "sha2 0.10.6",
- "sha3",
-]
-
-[[package]]
-name = "keccak"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3afef3b6eff9ce9d8ff9b3601125eec7f0c8cbac7abd14f355d053fa56c98768"
-dependencies = [
- "cpufeatures",
+ "signature",
 ]
 
 [[package]]
@@ -1013,11 +1008,12 @@ checksum = "9f746c4065a8fa3fe23974dd82f15431cc8d40779821001404d10d2e79ca7d79"
 
 [[package]]
 name = "pbkdf2"
-version = "0.11.0"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83a0692ec44e4cf1ef28ca317f14f8f07da2d95ec3fa01f86e4467b725e60917"
+checksum = "f0ca0b5a68607598bf3bad68f32227a8164f6254833f84eafaac409cd6746c31"
 dependencies = [
  "digest 0.10.6",
+ "hmac",
 ]
 
 [[package]]
@@ -1097,9 +1093,9 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "pkcs8"
-version = "0.9.0"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9eca2c590a5f85da82668fa685c09ce2888b9430e83299debf1f34b65fd4a4ba"
+checksum = "f950b2377845cebe5cf8b5165cb3cc1a5e0fa5cfa3e1f7f55707d8fd82e0a7b7"
 dependencies = [
  "der",
  "spki",
@@ -1263,13 +1259,12 @@ checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
 
 [[package]]
 name = "rfc6979"
-version = "0.3.1"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7743f17af12fa0b03b803ba12cd6a8d9483a587e89c69445e3909655c0b9fabb"
+checksum = "f8dd2a808d456c4a54e300a23e9f5a67e122c3024119acbfd73e3bf664491cb2"
 dependencies = [
- "crypto-bigint",
  "hmac",
- "zeroize",
+ "subtle",
 ]
 
 [[package]]
@@ -1377,9 +1372,9 @@ dependencies = [
 
 [[package]]
 name = "sec1"
-version = "0.3.0"
+version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3be24c1842290c45df0a7bf069e0c268a747ad05a192f2fd7dcfdbc1cba40928"
+checksum = "f0aec48e813d6b90b15f0b8948af3c63483992dee44c03e9930b3eebdabe046e"
 dependencies = [
  "base16ct",
  "der",
@@ -1504,21 +1499,11 @@ dependencies = [
  "digest 0.10.6",
 ]
 
-[[package]]
-name = "sha3"
-version = "0.10.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdf0c33fae925bdc080598b84bc15c55e7b9a4a43b3c704da051f977469691c9"
-dependencies = [
- "digest 0.10.6",
- "keccak",
-]
-
 [[package]]
 name = "signature"
-version = "1.6.4"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74233d3b3b2f6d4b006dc19dee745e73e2a6bfb6f93607cd3b02bd5b00797d7c"
+checksum = "5e1788eed21689f9cf370582dfc467ef36ed9c707f073528ddafa8d83e3b8500"
 dependencies = [
  "digest 0.10.6",
  "rand_core",
@@ -1551,9 +1536,9 @@ checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
 [[package]]
 name = "spki"
-version = "0.6.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67cf02bbac7a337dc36e4f5a693db6c21e7863f45070f7064577eb4367a3212b"
+checksum = "37a5be806ab6f127c3da44b7378837ebf01dadca8510a0e572460216b228bd0e"
 dependencies = [
  "base64ct",
  "der",
@@ -1623,9 +1608,9 @@ dependencies = [
 
 [[package]]
 name = "tendermint"
-version = "0.30.0"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b90c3c1e32352551f0f1639ce765e4c66ce250c733d4b9ba1aff81130437465c"
+checksum = "a1b58bdb6c44a2621b8b6bd0585d5912ba32546317604130a42410bcc813ef16"
 dependencies = [
  "bytes",
  "digest 0.10.6",
@@ -1654,9 +1639,9 @@ dependencies = [
 
 [[package]]
 name = "tendermint-config"
-version = "0.30.0"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74efd33bcb53413b77cbe90ccb2cf0403930a5c1f300725deb87a61f7c4fab90"
+checksum = "088bac81db392e66eedb508c400ebb2096d1e21cc40d71e3739a9bbd6838809a"
 dependencies = [
  "flex-error",
  "serde",
@@ -1668,9 +1653,9 @@ dependencies = [
 
 [[package]]
 name = "tendermint-proto"
-version = "0.30.0"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e553ed65874c3f35a71eb60d255edfea956274b5af37a0297d54bba039fe45e3"
+checksum = "a1f15666993e193fa4d2b2479aa1e4f1bbe41283c820812df8dd618f41ca3f7a"
 dependencies = [
  "bytes",
  "flex-error",
@@ -1686,9 +1671,9 @@ dependencies = [
 
 [[package]]
 name = "tendermint-rpc"
-version = "0.30.0"
+version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d79bd426571d6a805be5c0b6749707ede6c6ee5e55dd45baef46857a1baa9f54"
+checksum = "120ccb296a0ec4485ddb78eb842e481d7a859d5659e0f1881456f8c127d5e950"
 dependencies = [
  "async-trait",
  "bytes",
diff --git a/cosmos-sdk-proto/Cargo.toml b/cosmos-sdk-proto/Cargo.toml
index dd61d2fd..2c96fffc 100644
--- a/cosmos-sdk-proto/Cargo.toml
+++ b/cosmos-sdk-proto/Cargo.toml
@@ -18,7 +18,7 @@ rust-version = "1.63"
 [dependencies]
 prost = "0.11"
 prost-types = "0.11"
-tendermint-proto = "0.30"
+tendermint-proto = "0.31"
 
 # Optional dependencies
 tonic = { version = "0.8", optional = true, default-features = false, features = ["codegen", "prost"] }
diff --git a/cosmrs/Cargo.toml b/cosmrs/Cargo.toml
index 3432f6c9..6443cb3f 100644
--- a/cosmrs/Cargo.toml
+++ b/cosmrs/Cargo.toml
@@ -9,23 +9,23 @@ readme = "README.md"
 categories = ["cryptography", "cryptography::cryptocurrencies", "encoding"]
 keywords = ["blockchain", "cosmos", "tendermint", "transaction"]
 edition = "2021"
-rust-version = "1.63"
+rust-version = "1.65"
 
 [dependencies]
 cosmos-sdk-proto = { version = "0.17", default-features = false, path = "../cosmos-sdk-proto" }
-ecdsa = { version = "0.14", features = ["std"] }
+ecdsa = { version = "0.16", features = ["std"] }
 eyre = "0.6"
-k256 = { version = "0.11", features = ["ecdsa", "sha256"] }
+k256 = { version = "0.13", features = ["ecdsa", "sha256"] }
 rand_core = { version = "0.6", features = ["std"] }
 serde = { version = "1", features = ["serde_derive"] }
 serde_json = "1"
 subtle-encoding = { version = "0.5", features = ["bech32-preview"] }
-tendermint = { version = "0.30", features = ["secp256k1"] }
+tendermint = { version = "0.31", features = ["secp256k1"] }
 thiserror = "1"
 
 # optional dependencies
-bip32 = { version = "0.4", optional = true }
-tendermint-rpc = { version = "0.30", optional = true, features = ["http-client"] }
+bip32 = { version = "0.5", optional = true }
+tendermint-rpc = { version = "0.31", optional = true, features = ["http-client"] }
 tokio = { version = "1", optional = true }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
diff --git a/cosmrs/src/base/account_id.rs b/cosmrs/src/base/account_id.rs
index 09218d4d..d8260e84 100644
--- a/cosmrs/src/base/account_id.rs
+++ b/cosmrs/src/base/account_id.rs
@@ -21,7 +21,7 @@ impl AccountId {
     /// Create an [`AccountId`] with the given human-readable prefix and
     /// public key hash.
     pub fn new(prefix: &str, bytes: &[u8]) -> Result<Self> {
-        let id = bech32::encode(prefix, &bytes);
+        let id = bech32::encode(prefix, bytes);
 
         if !prefix.chars().all(|c| matches!(c, 'a'..='z' | '0'..='9')) {
             return Err(Error::AccountId { id })
diff --git a/cosmrs/src/crypto/secp256k1/signing_key.rs b/cosmrs/src/crypto/secp256k1/signing_key.rs
index 734a97e0..88b43c84 100644
--- a/cosmrs/src/crypto/secp256k1/signing_key.rs
+++ b/cosmrs/src/crypto/secp256k1/signing_key.rs
@@ -4,6 +4,7 @@ use crate::{
     crypto::{secp256k1::Signature, PublicKey},
     ErrorReport, Result,
 };
+use ecdsa::signature::{Keypair, Signer};
 use k256::ecdsa::VerifyingKey;
 use rand_core::OsRng;
 
@@ -27,14 +28,14 @@ pub struct SigningKey {
 impl SigningKey {
     /// Initialize from a provided signer object.
     ///
-    /// Use [`SigningKey::from_bytes`] to initialize from a raw private key.
+    /// Use [`SigningKey::from_slice`] to initialize from a raw private key.
     pub fn new(signer: Box<dyn EcdsaSigner>) -> Self {
         Self { inner: signer }
     }
 
     /// Initialize from a raw scalar value (big endian).
-    pub fn from_bytes(bytes: &[u8]) -> Result<Self> {
-        let signing_key = k256::ecdsa::SigningKey::from_bytes(bytes)?;
+    pub fn from_slice(bytes: &[u8]) -> Result<Self> {
+        let signing_key = k256::ecdsa::SigningKey::from_slice(bytes)?;
         Ok(Self::new(Box::new(signing_key)))
     }
 
@@ -77,7 +78,7 @@ impl TryFrom<&[u8]> for SigningKey {
     type Error = ErrorReport;
 
     fn try_from(bytes: &[u8]) -> Result<Self> {
-        Self::from_bytes(bytes)
+        Self::from_slice(bytes)
     }
 }
 
@@ -106,18 +107,6 @@ impl From<&bip32::XPrv> for SigningKey {
 ///
 /// Note that this trait is bounded on [`ecdsa::signature::Signer`], which is
 /// what is actually used to produce a signature for a given message.
-pub trait EcdsaSigner: ecdsa::signature::Signer<Signature> {
-    /// Get the ECDSA/secp256k1 [`VerifyingKey`] (i.e. public key) which
-    /// which corresponds to this signer's private key.
-    fn verifying_key(&self) -> VerifyingKey;
-}
+pub trait EcdsaSigner: Signer<Signature> + Keypair<VerifyingKey = VerifyingKey> {}
 
-impl<T> EcdsaSigner for T
-where
-    T: ecdsa::signature::Signer<Signature>,
-    k256::ecdsa::VerifyingKey: for<'a> From<&'a T>,
-{
-    fn verifying_key(&self) -> VerifyingKey {
-        self.into()
-    }
-}
+impl<T> EcdsaSigner for T where T: Signer<Signature> + Keypair<VerifyingKey = VerifyingKey> {}
diff --git a/cosmrs/src/dev.rs b/cosmrs/src/dev.rs
index 2236308f..73c7a957 100644
--- a/cosmrs/src/dev.rs
+++ b/cosmrs/src/dev.rs
@@ -35,13 +35,13 @@ where
     let result = panic::catch_unwind(f);
 
     if result.is_err() {
-        let logs = exec_docker_command("logs", &[&container_id]);
+        let logs = exec_docker_command("logs", [&container_id]);
 
         println!("\n---- docker stdout ----");
         println!("{}", logs);
     }
 
-    exec_docker_command("kill", &[&container_id]);
+    exec_docker_command("kill", [&container_id]);
 
     match result {
         Ok(res) => res,
diff --git a/cosmrs/src/tx/sign_doc.rs b/cosmrs/src/tx/sign_doc.rs
index fe53caa9..cb7a6366 100644
--- a/cosmrs/src/tx/sign_doc.rs
+++ b/cosmrs/src/tx/sign_doc.rs
@@ -65,7 +65,7 @@ impl SignDoc {
         Ok(proto::cosmos::tx::v1beta1::TxRaw {
             body_bytes: self.body_bytes,
             auth_info_bytes: self.auth_info_bytes,
-            signatures: vec![signature.as_ref().to_vec()],
+            signatures: vec![signature.to_vec()],
         }
         .into())
     }
diff --git a/proto-build/src/main.rs b/proto-build/src/main.rs
index aac90af0..72c9e47f 100644
--- a/proto-build/src/main.rs
+++ b/proto-build/src/main.rs
@@ -166,19 +166,19 @@ fn run_rustfmt(dir: &Path) {
 
 fn update_submodules() {
     info!("Updating cosmos/cosmos-sdk submodule...");
-    run_git(&["submodule", "update", "--init"]);
-    run_git(&["-C", COSMOS_SDK_DIR, "fetch"]);
-    run_git(&["-C", COSMOS_SDK_DIR, "reset", "--hard", COSMOS_SDK_REV]);
+    run_git(["submodule", "update", "--init"]);
+    run_git(["-C", COSMOS_SDK_DIR, "fetch"]);
+    run_git(["-C", COSMOS_SDK_DIR, "reset", "--hard", COSMOS_SDK_REV]);
 
     info!("Updating cosmos/ibc-go submodule...");
-    run_git(&["submodule", "update", "--init"]);
-    run_git(&["-C", IBC_DIR, "fetch"]);
-    run_git(&["-C", IBC_DIR, "reset", "--hard", IBC_REV]);
+    run_git(["submodule", "update", "--init"]);
+    run_git(["-C", IBC_DIR, "fetch"]);
+    run_git(["-C", IBC_DIR, "reset", "--hard", IBC_REV]);
 
     info!("Updating wasmd submodule...");
-    run_git(&["submodule", "update", "--init"]);
-    run_git(&["-C", WASMD_DIR, "fetch"]);
-    run_git(&["-C", WASMD_DIR, "reset", "--hard", WASMD_REV]);
+    run_git(["submodule", "update", "--init"]);
+    run_git(["-C", WASMD_DIR, "fetch"]);
+    run_git(["-C", WASMD_DIR, "reset", "--hard", WASMD_REV]);
 }
 
 fn output_sdk_version(out_dir: &Path) {
@@ -361,8 +361,8 @@ fn copy_generated_files(from_dir: &Path, to_dir: &Path) {
     info!("Copying generated files into '{}'...", to_dir.display());
 
     // Remove old compiled files
-    remove_dir_all(&to_dir).unwrap_or_default();
-    create_dir_all(&to_dir).unwrap();
+    remove_dir_all(to_dir).unwrap_or_default();
+    create_dir_all(to_dir).unwrap();
 
     let mut filenames = Vec::new();
 
diff --git a/rust-toolchain b/rust-toolchain
index af92bdd9..902c7418 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-1.63.0
+1.65.0