diff --git a/docs/source/conf.py b/docs/source/conf.py
index 16f06a5..01cbf0f 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -100,7 +100,7 @@
     "github_user": "pyoceans",
     "github_repo": "python-ctd",
     "github_banner": True,
-    "travis_button": True,
+    "travis_button": False,
     "fixed_sidebar": True,
 }
 
diff --git a/setup.cfg b/setup.cfg
index d4ce1de..012e343 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,11 +20,12 @@ classifiers =
 [options]
 zip_safe = True
 install_requires =
+    chardet
     gsw >=3.3.0
     matplotlib
     numpy
-    pandas-flavor >=0.1.2
     pandas >=0.24.0
+    pandas-flavor >=0.1.2
     scipy
 python_requires = >=3.6
 packages = find: