diff --git a/requirements-dev.txt b/requirements-dev.txt
index aab122b..2f02343 100755
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,5 +1,5 @@
 numpy
-pandas
+pandas==1.*
 scipy
 python-dateutil
 requests
@@ -13,4 +13,4 @@ ipython
 ipykernel
 nbsphinx
 nbsphinx_link
-matplotlib
\ No newline at end of file
+matplotlib
diff --git a/requirements.txt b/requirements.txt
index dfbd325..473fe05 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 numpy
-pandas
+pandas==1.*
 python-dateutil
 requests