diff --git a/.cargo/config.toml b/.cargo/config.toml
index e3432467..42bbb13f 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,2 +1,3 @@
 [alias]
 clippy-ci = "clippy --all-features --all-targets --all"
+clippy-msrv-ci = "clippy --all-features --lib --all" # Only check --lib target w/ MSRV toolchain.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3c585be1..ec17adce 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,6 +4,9 @@ on:
       - main
       - "*_dev"
   pull_request:
+  merge_group:
+  schedule:
+    - cron: '0 18 * * *'
 
 name: CI
 permissions:
@@ -22,24 +25,17 @@ jobs:
           - ubuntu-latest
           - macos-latest
           - windows-latest
-        rust:
-          - stable
-          # MSRV
-          - 1.56.0
     steps:
       - uses: actions/checkout@v3
         with:
           persist-credentials: false
-      - uses: actions-rs/toolchain@v1
+
+      - uses: dtolnay/rust-toolchain@stable
         with:
-          profile: minimal
-          toolchain: ${{ matrix.rust }}
           components: clippy
 
       - name: Clippy (${{ matrix.os }})
-        uses: actions-rs/cargo@v1
-        with:
-          command: clippy-ci
+        run: cargo clippy-ci
 
       - name: Clippy (Android)
         if: matrix.os == 'ubuntu-latest'
@@ -61,6 +57,46 @@ jobs:
       #     rustup target add wasm32-unknown-unknown
       #     cargo clippy-ci --target wasm32-unknown-unknown
 
+  clippy-msrv:
+    name: Clippy (MSRV)
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          persist-credentials: false
+
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: "1.64.0" # MSRV
+          components: clippy
+
+      - name: Install cargo-ndk.
+        run: |
+          cargo install cargo-ndk --version 2.12.7
+          rustup target add aarch64-linux-android
+
+      - name: Clippy (${{ matrix.os }})
+        run: cargo clippy-msrv-ci
+
+      - name: Clippy (Android)
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          cargo ndk -t arm64-v8a clippy-msrv-ci
+
+      - name: Clippy (iOS)
+        if: matrix.os == 'macos-latest'
+        run: |
+          rustup target add x86_64-apple-ios
+          cargo clippy-msrv-ci --target x86_64-apple-ios
+
+      # TODO: Consider WASM. See note on "clippy" job.
+
   test:
     name: Test
     runs-on: ${{ matrix.os }}
@@ -74,15 +110,11 @@ jobs:
       - uses: actions/checkout@v3
         with:
           persist-credentials: false
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-    
+
+      - uses: dtolnay/rust-toolchain@stable
+
       - name: Test (${{ matrix.os }})
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
+        run: cargo test
 
       - name: Setup Android test environment
         uses: actions/setup-java@v2
@@ -137,15 +169,12 @@ jobs:
       - uses: actions/checkout@v3
         with:
           persist-credentials: false
-      - uses: actions-rs/toolchain@v1
+
+      - uses: dtolnay/rust-toolchain@stable
         with:
-          profile: minimal
-          toolchain: stable
           components: rustfmt
-      - uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check
+
+      - run: cargo fmt --all -- --check
   
   android_fmt:
     name: Ktlint
diff --git a/Cargo.toml b/Cargo.toml
index 6d50acc2..09d2378e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ keywords = ["tls", "certificate", "verification", "os", "native"]
 repository = "https://github.com/1Password/rustls-platform-verifier"
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.64.0"
 
 exclude = [
     "android/.run",
diff --git a/README.md b/README.md
index 6b6a9c22..c3626b0e 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![crates.io version](https://img.shields.io/crates/v/rustls-platform-verifier.svg)](https://crates.io/crates/rustls-platform-verifier)
 [![crate documentation](https://docs.rs/rustls-platform-verifier/badge.svg)](https://docs.rs/rustls-platform-verifier)
-![MSRV](https://img.shields.io/badge/rustc-1.56+-blue.svg)
+![MSRV](https://img.shields.io/badge/rustc-1.64+-blue.svg)
 [![crates.io downloads](https://img.shields.io/crates/d/rustls-platform-verifier.svg)](https://crates.io/crates/rustls-platform-verifier)
 ![CI](https://github.com/1Password/rustls-platform-verifier/workflows/CI/badge.svg)
 
@@ -159,4 +159,4 @@ Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
 Unless you explicitly state otherwise, any contribution intentionally submitted
 for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
 be dual licensed as above, without any additional terms or conditions.
-</sub>
\ No newline at end of file
+</sub>
diff --git a/src/verification/android.rs b/src/verification/android.rs
index 5bda06a5..90239095 100644
--- a/src/verification/android.rs
+++ b/src/verification/android.rs
@@ -248,7 +248,7 @@ fn extract_result_info(env: &JNIEnv<'_>, result: JObject<'_>) -> (VerifierStatus
     let msg = env
         .get_field(result, "message", "Ljava/lang/String;")
         .and_then(|m| m.l())
-        .map(|o| (!o.is_null()).then(|| o))
+        .map(|o| (!o.is_null()).then_some(o))
         .and_then(|s| s.map(|s| JavaStr::from_env(env, s.into())).transpose())
         .unwrap();
 
diff --git a/src/verification/windows.rs b/src/verification/windows.rs
index cddab88c..23952bfc 100644
--- a/src/verification/windows.rs
+++ b/src/verification/windows.rs
@@ -184,7 +184,7 @@ impl Certificate {
                 CERT_SET_PROPERTY_IGNORE_PERSIST_ERROR_FLAG,
                 prop_data,
             ) == TRUE)
-                .then(|| ())
+                .then_some(())
         })
     }
 }