diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index ab9aa29..f6f447b 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -8,6 +8,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
+      - run: cargo check --package ulid-cli
       - run: cargo test
       - run: cargo test --all-features
       - run: cargo test --no-default-features --features=std
diff --git a/benches/bench.rs b/benches/bench.rs
index 0a62802..ed0a091 100644
--- a/benches/bench.rs
+++ b/benches/bench.rs
@@ -3,7 +3,7 @@ use std::time::SystemTime;
 use ulid::{Generator, Ulid, ULID_LEN};
 
 fn bench_new(b: &mut Bencher) {
-    b.iter(|| Ulid::new());
+    b.iter(Ulid::new);
 }
 
 fn bench_generator_generate(b: &mut Bencher) {
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index e000f95..6b730ec 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -16,3 +16,4 @@ edition = "2018"
 [dependencies]
 structopt = "0.2"
 ulid = { version = "*", path = ".." }
+time = "0.3.11"
diff --git a/cli/src/bin/ulid.rs b/cli/src/bin/ulid.rs
index fd41be0..c63f641 100644
--- a/cli/src/bin/ulid.rs
+++ b/cli/src/bin/ulid.rs
@@ -62,7 +62,7 @@ fn generate(count: u32, monotonic: bool) {
 
 fn inspect(values: &[String]) {
     for val in values {
-        let ulid = Ulid::from_string(&val);
+        let ulid = Ulid::from_string(val);
         match ulid {
             Ok(ulid) => {
                 let upper_hex = format!("{:X}", ulid.0);
@@ -81,7 +81,7 @@ COMPONENTS:
 ",
                     ulid.to_string(),
                     upper_hex,
-                    ulid.datetime(),
+                    time::OffsetDateTime::from(ulid.datetime()),
                     ulid.timestamp_ms(),
                     upper_hex.chars().skip(6).collect::<String>()
                 );
diff --git a/src/generator.rs b/src/generator.rs
index 62fdb30..b374762 100644
--- a/src/generator.rs
+++ b/src/generator.rs
@@ -172,6 +172,7 @@ impl fmt::Display for MonotonicError {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use std::time::Duration;
 
     #[test]
     fn test_order_monotonic() {