diff --git a/examples/research_projects/pplm/requirements.txt b/examples/research_projects/pplm/requirements.txt
index f93fde0f78f..630d1b0f8f6 100644
--- a/examples/research_projects/pplm/requirements.txt
+++ b/examples/research_projects/pplm/requirements.txt
@@ -19,4 +19,4 @@ pytest
 conllu
 sentencepiece != 0.1.92
 protobuf
-transformers==4.38.0
+transformers==4.48.0