diff --git a/ci/requirements.txt b/ci/requirements.txt
index 1cd441c..00bbadf 100644
--- a/ci/requirements.txt
+++ b/ci/requirements.txt
@@ -8,5 +8,5 @@ cftime==1.6.3
 erddapy==2.2.0
 ctd==1.4.5 #python-ctd
 seawater==3.3.4
-bottleneck==1.3.7
+bottleneck==1.3.8
 #geomag cmweis github version... part of package