diff --git a/setup.cfg b/setup.cfg
index e2be3d1..ef35f84 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -47,7 +47,7 @@ install_requires =
     cpufeature>=0.2.0; platform_machine == "x86_64"
     packaging>=20.9
     sentencepiece>=0.1.99
-    peft>=0.5.0
+    peft==0.5.0
     safetensors>=0.3.1
     Dijkstar>=2.6.0