diff --git a/.circleci/config.yml b/.circleci/config.yml
index e685942e7b..dfc0187e4d 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -72,7 +72,7 @@ workflows:
           matrix:
             parameters:
               # Run with MSRV and some modern stable Rust
-              rust-version: ["1.73.0", "1.76.0"]
+              rust-version: ["1.73.0", "1.77.0"]
       - benchmarking:
           requires:
             - package_vm
diff --git a/contracts/staking/src/contract.rs b/contracts/staking/src/contract.rs
index 9015006ea2..a9de13a1b4 100644
--- a/contracts/staking/src/contract.rs
+++ b/contracts/staking/src/contract.rs
@@ -322,13 +322,14 @@ pub fn _bond_all_tokens(
 
     // we deduct pending claims from our account balance before reinvesting.
     // if there is not enough funds, we just return a no-op
-    match update_item(deps.storage, KEY_TOTAL_SUPPLY, |mut supply: Supply| {
+    let updated = update_item(deps.storage, KEY_TOTAL_SUPPLY, |mut supply: Supply| {
         balance.amount = balance.amount.checked_sub(supply.claims)?;
         // this just triggers the "no op" case if we don't have min_withdrawal left to reinvest
         balance.amount.checked_sub(invest.min_withdrawal)?;
         supply.bonded += balance.amount;
         Ok(supply)
-    }) {
+    });
+    match updated {
         Ok(_) => {}
         // if it is below the minimum, we do a no-op (do not revert other state from withdrawal)
         Err(StdError::Overflow { .. }) => return Ok(Response::default()),
diff --git a/packages/std/src/testing/assertions.rs b/packages/std/src/testing/assertions.rs
index c87ba28b55..01d68b29cd 100644
--- a/packages/std/src/testing/assertions.rs
+++ b/packages/std/src/testing/assertions.rs
@@ -158,6 +158,7 @@ mod tests {
     )]
     fn assert_approx_with_custom_panic_msg() {
         let adjective = "extra";
+        #[allow(dead_code)]
         #[derive(Debug)]
         struct Foo(u32);
         assert_approx_eq!(
diff --git a/packages/vm/src/cache.rs b/packages/vm/src/cache.rs
index 5677bbc3e3..993d8590d9 100644
--- a/packages/vm/src/cache.rs
+++ b/packages/vm/src/cache.rs
@@ -522,6 +522,7 @@ fn save_wasm_to_disk(dir: impl Into<PathBuf>, wasm: &[u8]) -> VmResult<Checksum>
     let mut file = OpenOptions::new()
         .write(true)
         .create(true)
+        .truncate(true)
         .open(filepath)
         .map_err(|e| VmError::cache_err(format!("Error opening Wasm file for writing: {e}")))?;
     file.write_all(wasm)
diff --git a/packages/vm/src/conversion.rs b/packages/vm/src/conversion.rs
index ef9577c4af..409abd6fa4 100644
--- a/packages/vm/src/conversion.rs
+++ b/packages/vm/src/conversion.rs
@@ -41,7 +41,8 @@ mod tests {
         assert_eq!(to_u32(2147483647usize).unwrap(), 2147483647);
         assert_eq!(to_u32(2147483648usize).unwrap(), 2147483648);
         assert_eq!(to_u32(4294967295usize).unwrap(), 4294967295);
-
+        // Gate required for Rust 1.77.0 in Linux, possibly a Rust/clippy regression bug
+        #[cfg(target_pointer_width = "64")]
         match to_u32(4294967296usize) {
             Err(VmError::ConversionErr {
                 from_type,
@@ -130,6 +131,8 @@ mod tests {
         assert_eq!(ref_to_u32(&2147483647usize).unwrap(), 2147483647);
         assert_eq!(ref_to_u32(&2147483648usize).unwrap(), 2147483648);
         assert_eq!(ref_to_u32(&4294967295usize).unwrap(), 4294967295);
+        // Gate required for Rust 1.77.0 in Linux, possibly a Rust/clippy regression bug
+        #[cfg(target_pointer_width = "64")]
         match ref_to_u32(&4294967296usize).unwrap_err() {
             VmError::ConversionErr {
                 from_type,