diff --git a/crates/ruff_db/src/diagnostic/mod.rs b/crates/ruff_db/src/diagnostic/mod.rs
index b5701e7501..5a81b188fc 100644
--- a/crates/ruff_db/src/diagnostic/mod.rs
+++ b/crates/ruff_db/src/diagnostic/mod.rs
@@ -106,11 +106,11 @@ impl Diagnostic {
     ///
     /// Note that this `Display` impl includes a trailing line terminator, so
     /// callers should prefer using this with `write!` instead of `writeln!`.
-    pub fn display<'c, 'db, 'd>(
-        &'d self,
-        db: &'db dyn Db,
-        config: &'c DisplayDiagnosticConfig,
-    ) -> DisplayDiagnostic<'c, 'db, 'd> {
+    pub fn display<'a>(
+        &'a self,
+        db: &'a dyn Db,
+        config: &'a DisplayDiagnosticConfig,
+    ) -> DisplayDiagnostic<'a> {
         let resolver = FileResolver::new(db);
         DisplayDiagnostic::new(resolver, config, self)
     }
diff --git a/crates/ruff_db/src/diagnostic/render.rs b/crates/ruff_db/src/diagnostic/render.rs
index d27a929c64..b22768fd9a 100644
--- a/crates/ruff_db/src/diagnostic/render.rs
+++ b/crates/ruff_db/src/diagnostic/render.rs
@@ -21,27 +21,27 @@ use super::{
 ///
 /// It is created via [`Diagnostic::display`].
 ///
-/// The lifetime parameters are:
+/// The lifetime parameter, `'a`, refers to the shorter of:
 ///
-/// * `'c` is the lifetime of the rendering configuration.
-/// * `'r` is the lifetime of the resolver used to load the contents of `Span`
+/// * The lifetime of the rendering configuration.
+/// * The lifetime of the resolver used to load the contents of `Span`
 ///   values. When using Salsa, this most commonly corresponds to the lifetime
 ///   of a Salsa `Db`.
-/// * `'d` is the lifetime of the diagnostic being rendered.
+/// * The lifetime of the diagnostic being rendered.
 #[derive(Debug)]
-pub struct DisplayDiagnostic<'c, 'r, 'd> {
-    config: &'c DisplayDiagnosticConfig,
-    resolver: FileResolver<'r>,
+pub struct DisplayDiagnostic<'a> {
+    config: &'a DisplayDiagnosticConfig,
+    resolver: FileResolver<'a>,
     annotate_renderer: AnnotateRenderer,
-    diag: &'d Diagnostic,
+    diag: &'a Diagnostic,
 }
 
-impl<'c, 'r, 'd> DisplayDiagnostic<'c, 'r, 'd> {
+impl<'a> DisplayDiagnostic<'a> {
     pub(crate) fn new(
-        resolver: FileResolver<'r>,
-        config: &'c DisplayDiagnosticConfig,
-        diag: &'d Diagnostic,
-    ) -> DisplayDiagnostic<'c, 'r, 'd> {
+        resolver: FileResolver<'a>,
+        config: &'a DisplayDiagnosticConfig,
+        diag: &'a Diagnostic,
+    ) -> DisplayDiagnostic<'a> {
         let annotate_renderer = if config.color {
             AnnotateRenderer::styled()
         } else {
@@ -56,7 +56,7 @@ impl<'c, 'r, 'd> DisplayDiagnostic<'c, 'r, 'd> {
     }
 }
 
-impl std::fmt::Display for DisplayDiagnostic<'_, '_, '_> {
+impl std::fmt::Display for DisplayDiagnostic<'_> {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         if matches!(self.config.format, DiagnosticFormat::Concise) {
             match self.diag.severity() {