diff --git a/transpiler-engine/requirements.txt b/transpiler-engine/requirements.txt
index 1585ac6..f4a1973 100644
--- a/transpiler-engine/requirements.txt
+++ b/transpiler-engine/requirements.txt
@@ -38,7 +38,7 @@ jsonpatch==1.33
 jsonpointer==3.0.0
 langchain==0.3.25
 langchain-community==0.3.27
-langchain-core==0.3.81
+langchain-core==1.2.22
 langchain-deepseek==0.1.3
 langchain-google-genai==2.1.5
 langchain-openai==0.3.18