diff --git a/.ci_support/environment-old.yml b/.ci_support/environment-old.yml
index ea8e0b8c3..7e5404cef 100644
--- a/.ci_support/environment-old.yml
+++ b/.ci_support/environment-old.yml
@@ -12,7 +12,7 @@ dependencies:
 - psutil =5.8.0
 - pyfileindex =0.0.16
 - pysqa =0.1.5
-- pytables =3.9.1
+- pytables =3.8.0
 - python-blosc2 =2.2.9
 - sqlalchemy =2.0.22
 - tqdm =4.44.0