diff --git a/examples/iterator.rs b/examples/iterator.rs
index f562b70..445dc37 100644
--- a/examples/iterator.rs
+++ b/examples/iterator.rs
@@ -35,7 +35,8 @@ fn main() {
     // returns the (key, value) tuples in order.
     let mut iter = store.iter_start(&reader).unwrap();
     while let Some(Ok((country, city))) = iter.next() {
-        println!("{}, {:?}", str::from_utf8(country).unwrap(), city);
+        let country = str::from_utf8(country).unwrap();
+        println!("{country}, {city:?}");
     }
 
     println!();
@@ -44,14 +45,14 @@ fn main() {
     // than the given key.
     let mut iter = store.iter_from(&reader, "Japan").unwrap();
     while let Some(Ok((country, city))) = iter.next() {
-        println!("{}, {:?}", str::from_utf8(country).unwrap(), city);
+        println!("{}, {city:?}", str::from_utf8(country).unwrap());
     }
 
     println!();
     println!("Iterating from the given prefix...");
     let mut iter = store.iter_from(&reader, "Un").unwrap();
     while let Some(Ok((country, city))) = iter.next() {
-        println!("{}, {:?}", str::from_utf8(country).unwrap(), city);
+        println!("{}, {city:?}", str::from_utf8(country).unwrap());
     }
 }
 
diff --git a/src/backend/impl_lmdb/arch_migrator.rs b/src/backend/impl_lmdb/arch_migrator.rs
index 05fcf7f..6a91db1 100644
--- a/src/backend/impl_lmdb/arch_migrator.rs
+++ b/src/backend/impl_lmdb/arch_migrator.rs
@@ -545,7 +545,7 @@ impl Migrator {
         out.write_all(b"VERSION=3\n")?;
         out.write_all(b"format=bytevalue\n")?;
         if let Some(database) = database {
-            writeln!(out, "database={}", database)?;
+            writeln!(out, "database={database}")?;
         }
         out.write_all(b"type=btree\n")?;
         writeln!(out, "mapsize={}", meta_data.mm_mapsize)?;
@@ -556,12 +556,12 @@ impl Migrator {
         for (key, value) in pairs {
             out.write_all(b" ")?;
             for byte in key {
-                write!(out, "{:02x}", byte)?;
+                write!(out, "{byte:02x}")?;
             }
             out.write_all(b"\n")?;
             out.write_all(b" ")?;
             for byte in value {
-                write!(out, "{:02x}", byte)?;
+                write!(out, "{byte:02x}")?;
             }
             out.write_all(b"\n")?;
         }
diff --git a/src/bin/dump.rs b/src/bin/dump.rs
index 8fa7b01..c0e12b9 100644
--- a/src/bin/dump.rs
+++ b/src/bin/dump.rs
@@ -29,7 +29,7 @@ fn main() -> Result<(), LmdbArchMigrateError> {
                         Some(str) => Some(str),
                     };
                 }
-                str => return Err(format!("arg -{} not recognized", str).into()),
+                str => return Err(format!("arg -{str} not recognized").into()),
             }
         } else {
             if env_path.is_some() {
diff --git a/tests/env-lmdb.rs b/tests/env-lmdb.rs
index 2c32d69..e3aca39 100644
--- a/tests/env-lmdb.rs
+++ b/tests/env-lmdb.rs
@@ -179,7 +179,7 @@ fn test_open_from_builder_with_dir_1() {
 #[should_panic(expected = "rkv: UnsuitableEnvironmentPath(\"bogus\")")]
 fn test_open_from_builder_with_dir_2() {
     let root = Path::new("bogus");
-    println!("Root path: {:?}", root);
+    println!("Root path: {root:?}");
     assert!(!root.is_dir());
 
     let mut builder = Rkv::environment_builder::<Lmdb>();
@@ -897,10 +897,10 @@ fn test_concurrent_read_transactions_prohibited() {
 
     match second {
         Err(StoreError::ReadTransactionAlreadyExists(t)) => {
-            println!("Thread was {:?}", t);
+            println!("Thread was {t:?}");
         }
         Err(e) => {
-            println!("Got error {:?}", e);
+            println!("Got error {e:?}");
         }
         _ => {
             panic!("Expected error.");
@@ -1045,7 +1045,7 @@ fn test_stat() {
     let k = Rkv::new::<Lmdb>(root.path()).expect("new succeeded");
     for i in 0..5 {
         let sk = k
-            .open_integer(&format!("sk{}", i)[..], StoreOptions::create())
+            .open_integer(&format!("sk{i}")[..], StoreOptions::create())
             .expect("opened");
         {
             let mut writer = k.write().expect("writer");
diff --git a/tests/env-safe.rs b/tests/env-safe.rs
index 2811126..9c20e39 100644
--- a/tests/env-safe.rs
+++ b/tests/env-safe.rs
@@ -115,7 +115,7 @@ fn test_open_from_builder_with_dir_safe_1() {
 #[should_panic(expected = "rkv: UnsuitableEnvironmentPath(\"bogus\")")]
 fn test_open_from_builder_with_dir_safe_2() {
     let root = Path::new("bogus");
-    println!("Root path: {:?}", root);
+    println!("Root path: {root:?}");
     assert!(!root.is_dir());
 
     let mut builder = Rkv::environment_builder::<SafeMode>();
diff --git a/tests/test_txn.rs b/tests/test_txn.rs
index ffc1d1f..1e8fdfb 100644
--- a/tests/test_txn.rs
+++ b/tests/test_txn.rs
@@ -51,8 +51,8 @@ fn read_many() {
         let mut writer = k.write().expect("env write lock");
 
         for id in 0..30_u64 {
-            let value = format!("value{}", id);
-            let date = format!("2019-06-{}", id);
+            let value = format!("value{id}");
+            let date = format!("2019-06-{id}");
             put_id_field(&mut writer, datestore, &date, id);
             put_id_field(&mut writer, valuestore, &value, id);
             put_sample(&mut writer, samplestore, id, &value);
@@ -60,26 +60,26 @@ fn read_many() {
 
         // now we read in the same transaction
         for id in 0..30_u64 {
-            let value = format!("value{}", id);
-            let date = format!("2019-06-{}", id);
+            let value = format!("value{id}");
+            let date = format!("2019-06-{id}");
             let ids = get_ids_by_field(&writer, datestore, &date);
             let ids2 = get_ids_by_field(&writer, valuestore, &value);
             let samples = get_samples(&writer, samplestore, &ids);
             let samples2 = get_samples(&writer, samplestore, &ids2);
-            println!("{:?}, {:?}", samples, samples2);
+            println!("{samples:?}, {samples2:?}");
         }
     }
 
     {
         let reader = k.read().expect("env read lock");
         for id in 0..30_u64 {
-            let value = format!("value{}", id);
-            let date = format!("2019-06-{}", id);
+            let value = format!("value{id}");
+            let date = format!("2019-06-{id}");
             let ids = get_ids_by_field(&reader, datestore, &date);
             let ids2 = get_ids_by_field(&reader, valuestore, &value);
             let samples = get_samples(&reader, samplestore, &ids);
             let samples2 = get_samples(&reader, samplestore, &ids2);
-            println!("{:?}, {:?}", samples, samples2);
+            println!("{samples:?}, {samples2:?}");
         }
     }
 }