From a4c22d1b8238d585c433a5bc25a6378bdf867456 Mon Sep 17 00:00:00 2001
From: Richard Barnes <rbarnes@umn.edu>
Date: Tue, 2 Jan 2018 23:37:34 -0600
Subject: [PATCH] Use Protocol 2 for pickling so things will work with RTD

---
 docs/plot_directive.py | 2 +-
 docs/richdem-docs      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/plot_directive.py b/docs/plot_directive.py
index dd23b355..22481ecf 100644
--- a/docs/plot_directive.py
+++ b/docs/plot_directive.py
@@ -697,7 +697,7 @@ def render_figures(code, code_path, output_dir, output_base, context,
 
     if cached:
         try:
-            pickle.dump(results, open(cached+'.pickle', 'wb'))
+            pickle.dump(results, open(cached+'.pickle', 'wb'), protocol=2)
         except Exception as err:
             raise PlotError(traceback.format_exc())        
 
diff --git a/docs/richdem-docs b/docs/richdem-docs
index 1005ede8..388ccfb1 160000
--- a/docs/richdem-docs
+++ b/docs/richdem-docs
@@ -1 +1 @@
-Subproject commit 1005ede8e4ee66b989a3a783f7859d09cd3ea785
+Subproject commit 388ccfb1a3c80e1a18eae774aa75f7589f357a2a