diff --git a/doc/requirements.txt b/doc/requirements.txt
index ff38ef46..b40e6213 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,3 +1,3 @@
-sphinxcontrib-napoleon==0.2.11
+#sphinxcontrib-napoleon==0.2.11
 sphinx_rtd_theme
 
diff --git a/requirements.txt b/requirements.txt
index 2140e3dd..73829a79 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,12 +1,11 @@
-netCDF4
-numpy
-sphinx
-netcdftime
-netCDF4
-cftime
+netCDF4==1.4.2
+numpy==1.16.0
+sphinx==1.8.5
+# netcdftime
+# netCDF4
+cftime==1.0.3.4
 # matplotlib
-Cython
-cartopy
-python-dateutil
-natsort
-sphinxcontrib-napoleon
\ No newline at end of file
+# Cython>0.15.1
+# cartopy==0.17
+# python-dateutil
+natsort
\ No newline at end of file