diff --git a/spec/prawn_manual_spec.rb b/spec/prawn_manual_spec.rb
index 273fc7106..b41d35a31 100644
--- a/spec/prawn_manual_spec.rb
+++ b/spec/prawn_manual_spec.rb
@@ -7,7 +7,7 @@
   {
     'ruby' => '2c0279e0bff2a9120494a52aa46216c1871902b5e66a3537bd4d3cbd66db0096b43b6e1ae0e4e189b561c4db9fa1afacb6c41f260e3aaf942faae2fee352d35b',
     'jruby' => '51baf6440907e9e38d22f50deafa91572aec1174e621c044ae077cfe3d4361982a505dae5f013dd06f64f38cb9b3a38d5a3f8f0903849591774e298a3c91d39a',
-    'truffleruby' => '2d001a18e27582cce60a6610ca0239de96e7413b0c2a657af5ef364cdc793f3ecd22fbf0ca88bd33cbc24f08cbf0f055cc24a9c2661087047b8ddd14c4554fa5'
+    'truffleruby' => '9cab8cd0736f239058ce8dc4b2915fe014e1461d434de456d9fbf140c2b69553f39accbe9acb38b974efd1e7d3e5dfddf77e99e0bdba56f43a8746a0e5fcf37b'
   }.freeze
 
 RSpec.describe Prawn do