diff --git a/binder/requirements.txt b/binder/requirements.txt
index 9623776..1a707bd 100644
--- a/binder/requirements.txt
+++ b/binder/requirements.txt
@@ -1,5 +1,5 @@
 # This file is used by mybinder.org to power the runnable examples.
-tiingo
+tiingo==0.9.0
 
 # You technically don't have to use tiingo with pandas, but
 # we included it since most data analysts will have it installed already.