diff --git a/README.rst b/README.rst
index c373f91..1341609 100644
--- a/README.rst
+++ b/README.rst
@@ -251,7 +251,9 @@ Plot user-generated samples
     plot_dkl(f, x, samples, prior_samples, ax_dkl,
              cache=cache, prior_cache=prior_cache)
 
-    ax_lines.get_shared_x_axes().join(ax_lines, ax_fgivenx, ax_samples)
+
+    ax_lines.sharey(ax_fgivenx)
+    ax_fgivenx.sharey(ax_samples)
 
     fig.tight_layout()
     fig.savefig('plot.png')
diff --git a/fgivenx/test/test_drivers.py b/fgivenx/test/test_drivers.py
index 2845078..37ee0b7 100644
--- a/fgivenx/test/test_drivers.py
+++ b/fgivenx/test/test_drivers.py
@@ -134,5 +134,6 @@ def f(x, theta):
         plot_dkl(f, x, samples, prior_samples, ax_dkl,
                  cache=cache, prior_cache=prior_cache)
 
-        ax_lines.get_shared_x_axes().join(ax_lines, ax_fgivenx, ax_samples)
+        ax_lines.sharey(ax_fgivenx)
+        ax_fgivenx.sharey(ax_samples)
         fig.set_size_inches(6, 6)