diff --git a/serde_derive/src/dummy.rs b/serde_derive/src/dummy.rs
index a02bd3762..2be502713 100644
--- a/serde_derive/src/dummy.rs
+++ b/serde_derive/src/dummy.rs
@@ -39,10 +39,6 @@ pub fn wrap_in_const(
     }
 }
 
-#[allow(deprecated)]
 fn unraw(ident: &Ident) -> String {
-    // str::trim_start_matches was added in 1.30, trim_left_matches deprecated
-    // in 1.33. We currently support rustc back to 1.15 so we need to continue
-    // to use the deprecated one.
-    ident.to_string().trim_left_matches("r#").to_owned()
+    ident.to_string().trim_start_matches("r#").to_owned()
 }
diff --git a/serde_derive/src/internals/attr.rs b/serde_derive/src/internals/attr.rs
index dc532484d..c9a76a621 100644
--- a/serde_derive/src/internals/attr.rs
+++ b/serde_derive/src/internals/attr.rs
@@ -141,12 +141,8 @@ pub struct Name {
     deserialize_aliases: Vec<String>,
 }
 
-#[allow(deprecated)]
 fn unraw(ident: &Ident) -> String {
-    // str::trim_start_matches was added in 1.30, trim_left_matches deprecated
-    // in 1.33. We currently support rustc back to 1.15 so we need to continue
-    // to use the deprecated one.
-    ident.to_string().trim_left_matches("r#").to_owned()
+    ident.to_string().trim_start_matches("r#").to_owned()
 }
 
 impl Name {