diff --git a/.travis.yml b/.travis.yml
index f33034e..5248f23 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -53,7 +53,7 @@ before_install:
 
 install:
   - if [ x$TRAVIS_TAG != x ] && [ $METHOD = cross ]; then sudo apt-get install -qq lcab > /dev/null; fi
-  - if [ $METHOD = documents ]; then sudo apt-get install -qq pandoc; fi
+  - if [ $METHOD = documents ]; then sudo apt-get install -qq pandoc ruby-sass; fi
   - if [ x$XCC = xi686-w64-mingw32-gcc ]; then sudo apt-get install -qq gcc-mingw-w64-i686 binutils-mingw-w64-i686; fi
   - if [ x$WINE != x ]; then sudo apt-get install -qq wine > /dev/null; fi
   - if [ $METHOD = valgrind ]; then sudo apt-get install -qq valgrind > /dev/null; fi
diff --git a/circle.yml b/circle.yml
index f0f6333..3fe1830 100644
--- a/circle.yml
+++ b/circle.yml
@@ -3,7 +3,7 @@ general:
 dependencies:
   pre:
       - sudo apt-get update
-      - sudo apt-get -qq install pandoc
+      - sudo apt-get -qq install pandoc ruby-sass
 
 test:
   post: