diff --git a/miette-derive/src/help.rs b/miette-derive/src/help.rs
index 1c21054..8c45baa 100644
--- a/miette-derive/src/help.rs
+++ b/miette-derive/src/help.rs
@@ -124,7 +124,7 @@ impl Help {
                 let (fmt, args) = display.expand_shorthand_cloned(&display_members);
                 Some(quote! {
                     fn help(&self) -> std::option::Option<std::boxed::Box<dyn std::fmt::Display + '_>> {
-                        #[allow(unused_variables, deprecated)]
+                        #[allow(unused_variables, deprecated, unused_assignments)]
                         let Self #display_pat = self;
                         std::option::Option::Some(std::boxed::Box::new(format!(#fmt #args)))
                     }
@@ -134,7 +134,7 @@ impl Help {
                 let var = quote! { __miette_internal_var };
                 Some(quote! {
                     fn help(&self) -> std::option::Option<std::boxed::Box<dyn std::fmt::Display + '_>> {
-                        #[allow(unused_variables, deprecated)]
+                        #[allow(unused_variables, deprecated, unused_assignments)]
                         let Self #display_pat = self;
                         use miette::macro_helpers::ToOption;
                         miette::macro_helpers::OptionalWrapper::<#ty>::new().to_option(&self.#member).as_ref().map(|#var| -> std::boxed::Box<dyn std::fmt::Display + '_> { std::boxed::Box::new(format!("{}", #var)) })
diff --git a/miette-derive/src/label.rs b/miette-derive/src/label.rs
index ab2ceac..6ffd3ff 100644
--- a/miette-derive/src/label.rs
+++ b/miette-derive/src/label.rs
@@ -225,7 +225,7 @@ impl Labels {
         });
 
         Some(quote! {
-            #[allow(unused_variables)]
+            #[allow(unused_variables, unused_assignments)]
             fn labels(&self) -> std::option::Option<std::boxed::Box<dyn std::iter::Iterator<Item = miette::LabeledSpan> + '_>> {
                 use miette::macro_helpers::ToOption;
                 let Self #display_pat = self;
diff --git a/miette-derive/src/source_code.rs b/miette-derive/src/source_code.rs
index e1b85ab..2d9c4b2 100644
--- a/miette-derive/src/source_code.rs
+++ b/miette-derive/src/source_code.rs
@@ -73,7 +73,7 @@ impl SourceCode {
         };
 
         Some(quote! {
-            #[allow(unused_variables)]
+            #[allow(unused_variables, unused_assignments)]
             fn source_code(&self) -> std::option::Option<&dyn miette::SourceCode> {
                 let Self #display_pat = self;
                 #ret
diff --git a/miette-derive/src/url.rs b/miette-derive/src/url.rs
index 734d1a4..7daa00e 100644
--- a/miette-derive/src/url.rs
+++ b/miette-derive/src/url.rs
@@ -130,7 +130,7 @@ impl Url {
         };
         Some(quote! {
             fn url(&self) -> std::option::Option<std::boxed::Box<dyn std::fmt::Display + '_>> {
-                #[allow(unused_variables, deprecated)]
+                #[allow(unused_variables, deprecated, unused_assignments)]
                 let Self #pat = self;
                 std::option::Option::Some(std::boxed::Box::new(format!(#fmt #args)))
             }