diff --git a/.circleci/config.yml b/.circleci/config.yml
index 61f1f60b1..58d04827c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -42,7 +42,7 @@ workflows:
 jobs:
   contract_cw1_subkeys:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/contracts/cw1-subkeys
     steps:
       - checkout:
@@ -52,7 +52,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-cw1-subkeys-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-cw1-subkeys-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Unit Tests
           environment:
@@ -65,11 +65,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-cw1-subkeys-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-cw1-subkeys-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   contract_cw1_whitelist:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/contracts/cw1-whitelist
     steps:
       - checkout:
@@ -79,7 +79,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-cw1-whitelist-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-cw1-whitelist-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Unit Tests
           environment:
@@ -92,11 +92,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-cw1-whitelist-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-cw1-whitelist-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   contract_cw3_fixed_multisig:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/contracts/cw3-fixed-multisig
     steps:
       - checkout:
@@ -106,7 +106,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-cw3-fixed-multisig-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-cw3-fixed-multisig-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Unit Tests
           environment:
@@ -119,11 +119,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-cw3-fixed-multisig-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-cw3-fixed-multisig-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   contract_cw3_flex_multisig:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/contracts/cw3-flex-multisig
     steps:
       - checkout:
@@ -133,7 +133,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-cw3-flex-multisig-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-cw3-flex-multisig-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Unit Tests
           environment:
@@ -146,11 +146,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-cw3-flex-multisig-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-cw3-flex-multisig-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   contract_cw4_group:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/contracts/cw4-group
     steps:
       - checkout:
@@ -160,7 +160,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-cw4-group-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-cw4-group-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Unit Tests
           environment:
@@ -173,11 +173,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-cw4-group-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-cw4-group-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   contract_cw4_stake:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/contracts/cw4-stake
     steps:
       - checkout:
@@ -187,7 +187,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-cw4-stake-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-cw4-stake-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Unit Tests
           environment:
@@ -200,11 +200,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-cw4-stake-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-cw4-stake-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   contract_cw20_base:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/contracts/cw20-base
     steps:
       - checkout:
@@ -214,7 +214,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-cw20-base-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-cw20-base-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Unit Tests
           environment:
@@ -227,11 +227,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-cw20-base-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-cw20-base-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   contract_cw20_ics20:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/contracts/cw20-ics20
     steps:
       - checkout:
@@ -241,7 +241,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-cw20-ics20-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-cw20-ics20-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Unit Tests
           environment:
@@ -254,11 +254,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-cw20-ics20-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-cw20-ics20-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   package_controllers:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/packages/controllers
     steps:
       - checkout:
@@ -268,7 +268,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-controllers:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-v2-controllers:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Build library for native target
           command: cargo build --locked
@@ -279,11 +279,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-v2-controllers:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-v2-controllers:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   package_cw1:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/packages/cw1
     steps:
       - checkout:
@@ -293,7 +293,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-cw1:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-v2-cw1:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Build library for native target
           command: cargo build --locked
@@ -307,11 +307,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-v2-cw1:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-v2-cw1:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   package_cw2:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/packages/cw2
     steps:
       - checkout:
@@ -321,7 +321,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-cw2:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-v2-cw2:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Build library for native target
           command: cargo build --locked
@@ -333,11 +333,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-v2-cw2:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-v2-cw2:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   package_cw3:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/packages/cw3
     steps:
       - checkout:
@@ -347,7 +347,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-cw3:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-v2-cw3:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Build library for native target
           command: cargo build --locked
@@ -361,11 +361,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-v2-cw3:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-v2-cw3:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   package_cw4:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/packages/cw4
     steps:
       - checkout:
@@ -375,7 +375,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-cw4:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-v2-cw4:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Build library for native target
           command: cargo build --locked
@@ -389,11 +389,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-v2-cw4:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-v2-cw4:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   package_cw20:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/packages/cw20
     steps:
       - checkout:
@@ -403,7 +403,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-cw20:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-v2-cw20:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Build library for native target
           command: cargo build --locked
@@ -417,11 +417,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-v2-cw20:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-v2-cw20:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   package_cw1155:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project/packages/cw1155
     steps:
       - checkout:
@@ -431,7 +431,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-cw1155:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-v2-cw1155:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Build library for native target
           command: cargo build --locked
@@ -445,11 +445,11 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-v2-cw1155:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-v2-cw1155:1.65.0-{{ checksum "~/project/Cargo.lock" }}
 
   lint:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     steps:
       - checkout
       - run:
@@ -457,7 +457,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-lint-rust:1.64.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-lint-rust:1.65.0-{{ checksum "Cargo.lock" }}
       - run:
           name: Add rustfmt component
           command: rustup component add rustfmt
@@ -476,7 +476,7 @@ jobs:
             - target/debug/.fingerprint
             - target/debug/build
             - target/debug/deps
-          key: cargocache-v2-lint-rust:1.64.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-lint-rust:1.65.0-{{ checksum "Cargo.lock" }}
 
   # This runs one time on the top level to ensure all contracts compile properly into wasm.
   # We don't run the wasm build per contract build, and then reuse a lot of the same dependencies, so this speeds up CI time
@@ -484,7 +484,7 @@ jobs:
   # We also sanity-check the resultant wasm files.
   wasm-build:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     steps:
       - checkout:
           path: ~/project
@@ -493,7 +493,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-wasm-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+            - cargocache-wasm-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown
@@ -513,7 +513,7 @@ jobs:
           paths:
             - /usr/local/cargo/registry
             - target
-          key: cargocache-wasm-rust:1.64.0-{{ checksum "~/project/Cargo.lock" }}
+          key: cargocache-wasm-rust:1.65.0-{{ checksum "~/project/Cargo.lock" }}
       - run:
           name: Check wasm contracts
           command: cosmwasm-check ./target/wasm32-unknown-unknown/release/*.wasm
@@ -581,7 +581,7 @@ jobs:
 
   build_and_upload_schemas:
     docker:
-      - image: rust:1.64.0
+      - image: rust:1.65.0
     working_directory: ~/project
     steps:
       - checkout:
diff --git a/Cargo.toml b/Cargo.toml
index c384f634c..df1b7252f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,9 @@
 [workspace]
 members = ["packages/*", "contracts/*"]
 
+# Resolver has to be set explicitely in workspaces, see https://github.com/rust-lang/cargo/issues/9956
+resolver = "2"
+
 [profile.release.package.cw1-subkeys]
 codegen-units = 1
 incremental = false
diff --git a/contracts/cw1-whitelist/src/contract.rs b/contracts/cw1-whitelist/src/contract.rs
index 77f2b7ef7..b13fea207 100644
--- a/contracts/cw1-whitelist/src/contract.rs
+++ b/contracts/cw1-whitelist/src/contract.rs
@@ -111,7 +111,7 @@ pub fn execute_update_admins(
 
 fn can_execute(deps: Deps, sender: &str) -> StdResult<bool> {
     let cfg = ADMIN_LIST.load(deps.storage)?;
-    let can = cfg.is_admin(&sender);
+    let can = cfg.is_admin(sender);
     Ok(can)
 }
 
diff --git a/contracts/cw20-ics20/src/contract.rs b/contracts/cw20-ics20/src/contract.rs
index 7c0578cd7..9586bb04a 100644
--- a/contracts/cw20-ics20/src/contract.rs
+++ b/contracts/cw20-ics20/src/contract.rs
@@ -158,7 +158,7 @@ pub fn execute_transfer(
         .add_attribute("sender", &packet.sender)
         .add_attribute("receiver", &packet.receiver)
         .add_attribute("denom", &packet.denom)
-        .add_attribute("amount", &packet.amount.to_string());
+        .add_attribute("amount", packet.amount.to_string());
     Ok(res)
 }
 
diff --git a/contracts/cw4-group/src/tests.rs b/contracts/cw4-group/src/tests.rs
index 9ed220523..39bd87978 100644
--- a/contracts/cw4-group/src/tests.rs
+++ b/contracts/cw4-group/src/tests.rs
@@ -150,7 +150,7 @@ fn assert_users<S: Storage, A: Api, Q: Querier>(
     // this is only valid if we are not doing a historical query
     if height.is_none() {
         // compute expected metrics
-        let weights = vec![user1_weight, user2_weight, user3_weight];
+        let weights = [user1_weight, user2_weight, user3_weight];
         let sum: u64 = weights.iter().map(|x| x.unwrap_or_default()).sum();
         let count = weights.iter().filter(|x| x.is_some()).count();
 
@@ -357,7 +357,7 @@ fn hooks_fire() {
     let add_msg2 = ExecuteMsg::AddHook {
         addr: contract2.clone(),
     };
-    for msg in vec![add_msg, add_msg2] {
+    for msg in [add_msg, add_msg2] {
         let _ = execute(deps.as_mut(), mock_env(), admin_info.clone(), msg).unwrap();
     }
 
diff --git a/contracts/cw4-stake/src/contract.rs b/contracts/cw4-stake/src/contract.rs
index 408f3265c..20ee9fdad 100644
--- a/contracts/cw4-stake/src/contract.rs
+++ b/contracts/cw4-stake/src/contract.rs
@@ -502,7 +502,7 @@ mod tests {
         // this is only valid if we are not doing a historical query
         if height.is_none() {
             // compute expected metrics
-            let weights = vec![user1_weight, user2_weight, user3_weight];
+            let weights = [user1_weight, user2_weight, user3_weight];
             let sum: u64 = weights.iter().map(|x| x.unwrap_or_default()).sum();
             let count = weights.iter().filter(|x| x.is_some()).count();
 
@@ -931,7 +931,7 @@ mod tests {
         let add_msg2 = ExecuteMsg::AddHook {
             addr: contract2.clone(),
         };
-        for msg in vec![add_msg, add_msg2] {
+        for msg in [add_msg, add_msg2] {
             let _ = execute(deps.as_mut(), mock_env(), admin_info.clone(), msg).unwrap();
         }