diff --git a/src/util/psbt/map/input.rs b/src/util/psbt/map/input.rs
index 1aca4bfd..113f0626 100644
--- a/src/util/psbt/map/input.rs
+++ b/src/util/psbt/map/input.rs
@@ -166,7 +166,6 @@ impl fmt::Display for PsbtSighashType {
     }
 }
 
-#[allow(deprecated)]  // TODO: Swap `trim_left_matches` for `trim_start_matches` once MSRV >= 1.30.
 impl FromStr for PsbtSighashType {
     type Err = SighashTypeParseError;
 
@@ -184,7 +183,7 @@ impl FromStr for PsbtSighashType {
         }
 
         // We accept non-standard sighash values.
-        if let Ok(inner) = u32::from_str_radix(s.trim_left_matches("0x"), 16) {
+        if let Ok(inner) = u32::from_str_radix(s.trim_start_matches("0x"), 16) {
             return Ok(PsbtSighashType { inner });
         }