upgrade IPython master

needed to get a later version
ipython · Sep 7, 2018 · d062f49 · d062f49
1 parent ef6974b
commit d062f49
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -30,7 +30,7 @@ install:
       else
         SPEC="ipython==$IPYTHON"
       fi
-      pip install --pre "$SPEC"
+      pip install --upgrade --pre "$SPEC"
     fi
   - pip freeze
 script: