diff --git a/argh/src/lib.rs b/argh/src/lib.rs
index d56d1f0..998a4eb 100644
--- a/argh/src/lib.rs
+++ b/argh/src/lib.rs
@@ -967,7 +967,7 @@ pub struct ParseStructOptions<'a> {
     pub help_triggers: &'a [&'a str],
 }
 
-impl<'a> ParseStructOptions<'a> {
+impl ParseStructOptions<'_> {
     /// Parse a commandline option.
     ///
     /// `arg`: the current option argument being parsed (e.g. `--foo`).
@@ -1035,7 +1035,7 @@ pub struct ParseStructPositionals<'a> {
     pub last_is_greedy: bool,
 }
 
-impl<'a> ParseStructPositionals<'a> {
+impl ParseStructPositionals<'_> {
     /// Parse the next positional argument.
     ///
     /// `arg`: the argument supplied by the user.
@@ -1072,7 +1072,7 @@ pub struct ParseStructPositional<'a> {
     pub slot: &'a mut dyn ParseValueSlot,
 }
 
-impl<'a> ParseStructPositional<'a> {
+impl ParseStructPositional<'_> {
     /// Parse a positional argument.
     ///
     /// `arg`: the argument supplied by the user.
@@ -1109,7 +1109,7 @@ pub struct ParseStructSubCommand<'a> {
     pub parse_func: &'a mut dyn FnMut(&[&str], &[&str]) -> Result<(), EarlyExit>,
 }
 
-impl<'a> ParseStructSubCommand<'a> {
+impl ParseStructSubCommand<'_> {
     fn parse(
         &mut self,
         help: bool,
diff --git a/argh/tests/args_info_tests.rs b/argh/tests/args_info_tests.rs
index 1fc0730..58e2cda 100644
--- a/argh/tests/args_info_tests.rs
+++ b/argh/tests/args_info_tests.rs
@@ -427,6 +427,7 @@ fn args_info_test_subcommands() {
     }
 
     #[derive(FromArgs, ArgsInfo)]
+    #[allow(dead_code)]
     #[argh(subcommand)]
     /// Doc comments for subcommand enums does not appear in the help text.
     enum SubcommandEnum {
@@ -600,6 +601,7 @@ fn args_info_test_subcommand_notes_examples() {
         cmd: SubcommandEnum,
     }
 
+    #[allow(dead_code)]
     #[derive(FromArgs, ArgsInfo)]
     #[argh(subcommand)]
     /// Doc comments for subcommand enums does not appear in the help text.
diff --git a/argh/tests/lib.rs b/argh/tests/lib.rs
index 8119917..6a54ac3 100644
--- a/argh/tests/lib.rs
+++ b/argh/tests/lib.rs
@@ -1593,6 +1593,7 @@ fn redact_arg_values_subcommand() {
         _means: MeansSubcommand,
     }
 
+    #[allow(dead_code)]
     #[derive(FromArgs, Debug)]
     /// Short description
     #[argh(subcommand)]
@@ -1639,6 +1640,7 @@ fn redact_arg_values_subcommand_with_space_in_name() {
         _means: MeansSubcommand,
     }
 
+    #[allow(dead_code)]
     #[derive(FromArgs, Debug)]
     /// Short description
     #[argh(subcommand)]