Fix Travis CI macOS build failure

diff --git a/.travis.yml b/.travis.yml
index a28c28790b9312da2e8660b5189ed7d5bc00b0f6..6bcc8af0c43a05599f0336014317c6f522f86a76 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,8 +34,8 @@ matrix:
 
     - os: osx
       install:
-        - brew tap homebrew/science
         - brew update
+        - brew tap homebrew/science
         # TODO: install guile once 2.2 is supported in swig
         - brew install swig octave || echo "nope"
       script: