diff --git a/requirements.txt b/requirements.txt
index 2739240..d7138df 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
-numpy==2.0.2
-pandas==2.2.3
+numpy==1.23
+pandas==1.5.3
 EMD_signal==1.6.0
 vmdpy==0.2
 PyEMD==1.0.0