diff --git a/src/cache/mod.rs b/src/cache/mod.rs
index 19c599b..cb401dd 100644
--- a/src/cache/mod.rs
+++ b/src/cache/mod.rs
@@ -523,7 +523,7 @@ fn iterate_without_lines<'a>(
 }
 
 fn extract_class_name(full_path: &str) -> Option<&str> {
-    let after_last_period = full_path.split('.').last()?;
+    let after_last_period = full_path.split('.').next_back()?;
     // If the class is an inner class, we need to extract the outer class name
     after_last_period.split('$').next()
 }
diff --git a/src/mapper.rs b/src/mapper.rs
index 3467468..78c1efc 100644
--- a/src/mapper.rs
+++ b/src/mapper.rs
@@ -109,7 +109,7 @@ impl<'m> Iterator for RemappedFrameIter<'m> {
 }
 
 fn extract_class_name(full_path: &str) -> Option<&str> {
-    let after_last_period = full_path.split('.').last()?;
+    let after_last_period = full_path.split('.').next_back()?;
     // If the class is an inner class, we need to extract the outer class name
     after_last_period.split('$').next()
 }