diff --git a/src/assets.rs b/src/assets.rs
index d32ccbd4..e6c50219 100644
--- a/src/assets.rs
+++ b/src/assets.rs
@@ -370,7 +370,7 @@ mod tests {
         pub temp_dir: TempDir,
     }
 
-    impl<'a> SyntaxDetectionTest<'a> {
+    impl SyntaxDetectionTest<'_> {
         fn new() -> Self {
             SyntaxDetectionTest {
                 assets: HighlightingAssets::from_binary(),
diff --git a/src/controller.rs b/src/controller.rs
index ffc5dd5b..422b381e 100644
--- a/src/controller.rs
+++ b/src/controller.rs
@@ -25,7 +25,7 @@ pub struct Controller<'a> {
     preprocessor: Option<LessOpenPreprocessor>,
 }
 
-impl<'b> Controller<'b> {
+impl Controller<'_> {
     pub fn new<'a>(config: &'a Config, assets: &'a HighlightingAssets) -> Controller<'a> {
         Controller {
             config,
diff --git a/src/input.rs b/src/input.rs
index 0ebaa4ce..b36204df 100644
--- a/src/input.rs
+++ b/src/input.rs
@@ -75,7 +75,7 @@ pub(crate) enum InputKind<'a> {
     CustomReader(Box<dyn Read + 'a>),
 }
 
-impl<'a> InputKind<'a> {
+impl InputKind<'_> {
     pub fn description(&self) -> InputDescription {
         match self {
             InputKind::OrdinaryFile(ref path) => InputDescription::new(path.to_string_lossy()),
diff --git a/src/printer.rs b/src/printer.rs
index abc84464..2c364bd7 100644
--- a/src/printer.rs
+++ b/src/printer.rs
@@ -73,7 +73,7 @@ pub enum OutputHandle<'a> {
     FmtWrite(&'a mut dyn fmt::Write),
 }
 
-impl<'a> OutputHandle<'a> {
+impl OutputHandle<'_> {
     fn write_fmt(&mut self, args: fmt::Arguments<'_>) -> Result<()> {
         match self {
             Self::IoWrite(handle) => handle.write_fmt(args).map_err(Into::into),
@@ -116,7 +116,7 @@ impl<'a> SimplePrinter<'a> {
     }
 }
 
-impl<'a> Printer for SimplePrinter<'a> {
+impl Printer for SimplePrinter<'_> {
     fn print_header(
         &mut self,
         _handle: &mut OutputHandle,
@@ -448,7 +448,7 @@ impl<'a> InteractivePrinter<'a> {
     }
 }
 
-impl<'a> Printer for InteractivePrinter<'a> {
+impl Printer for InteractivePrinter<'_> {
     fn print_header(
         &mut self,
         handle: &mut OutputHandle,
diff --git a/src/syntax_mapping.rs b/src/syntax_mapping.rs
index 306443e6..0cd2d655 100644
--- a/src/syntax_mapping.rs
+++ b/src/syntax_mapping.rs
@@ -61,7 +61,7 @@ pub struct SyntaxMapping<'a> {
     halt_glob_build: Arc<AtomicBool>,
 }
 
-impl<'a> Drop for SyntaxMapping<'a> {
+impl Drop for SyntaxMapping<'_> {
     fn drop(&mut self) {
         // signal the offload thread to halt early
         self.halt_glob_build.store(true, Ordering::Relaxed);
diff --git a/src/vscreen.rs b/src/vscreen.rs
index af082cef..06cc038a 100644
--- a/src/vscreen.rs
+++ b/src/vscreen.rs
@@ -539,7 +539,7 @@ impl<'a> EscapeSequenceOffsetsIterator<'a> {
     }
 }
 
-impl<'a> Iterator for EscapeSequenceOffsetsIterator<'a> {
+impl Iterator for EscapeSequenceOffsetsIterator<'_> {
     type Item = EscapeSequenceOffsets;
     fn next(&mut self) -> Option<Self::Item> {
         match self.chars.peek() {