diff --git a/test/test_fiber.rb b/test/test_fiber.rb
index 3657ea4d..175b7222 100644
--- a/test/test_fiber.rb
+++ b/test/test_fiber.rb
@@ -618,8 +618,15 @@ def test_inspect
     spin_line_no = __LINE__ + 1
     f = spin(:baz) { :foo }
 
+    # Ruby 3.4.0 changed the format of the inspect string
+    method_name = if RUBY_VERSION < '3.4.0'
+                    '`test_inspect\''
+                  else
+                    '\'FiberTest#test_inspect\''
+                  end
+
     expected = format(
-      '#<Fiber baz:%s %s:%d:in `test_inspect\' (runnable)>',
+      "#<Fiber baz:%s %s:%d:in #{method_name} (runnable)>",
       f.object_id,
       __FILE__,
       spin_line_no
@@ -627,8 +634,9 @@ def test_inspect
     assert_equal expected, f.inspect
 
     f.await
+
     expected = format(
-      '#<Fiber baz:%s %s:%d:in `test_inspect\' (dead)>',
+      "#<Fiber baz:%s %s:%d:in #{method_name} (dead)>",
       f.object_id,
       __FILE__,
       spin_line_no