matplotlib
diff --git a/‎INSTALL
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+6Lines changed: 6 additions & 0 deletions b/‎INSTALL
Copy file name to clipboardExpand all lines: INSTALL
+6Lines changed: 6 additions & 0 deletions
@@ -247,6 +247,12 @@ Optional dependencies
     freetype 2.3 available, please edit L945 of `setupext.py` to reduce
     `min_version` to 2.3.
 
+`pytz`
+    Required if you want to manipulate datetime objects which are time-zone
+    aware.  An exception will be raised if you try to make time-zone aware
+    plots with out `pytz` installed.  It will become a required dependency
+    in 1.4.1.
+
 
 Required libraries that ship with matplotlib
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^