diff --git a/.travis.yml b/.travis.yml
index 4feb6c0e..c79d7103 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -37,7 +37,9 @@ before_install:
 - git config --global user.name "Travis CI"
 - git config --global user.email "travis@nobody.com"
 - git init ~/gh-pages
-
+- echo "Temporary switch to my fork of cover:"
+- git clone https://github.com/jsmaniac/cover.git -b multiple-output-formats ~/cover-tool/cover
+- (cd ~/cover-tool/cover; raco pkg install --deps search-auto --update-deps --skip-installed)
 
 cache:
   apt: true
diff --git a/graph-lib/Makefile b/graph-lib/Makefile
index d709299e..56272f34 100644
--- a/graph-lib/Makefile
+++ b/graph-lib/Makefile
@@ -12,4 +12,4 @@ clean:
 
 .PHONY: build-dep
 build-dep:
-	raco pkg install --deps search-auto --update-deps --skip-installed alexis-util cover debug
+	raco pkg install --deps search-auto --update-deps --skip-installed alexis-util cover cover-coveralls debug
diff --git a/graph-lib/make/make.rkt b/graph-lib/make/make.rkt
index e715fb53..8d065977 100644
--- a/graph-lib/make/make.rkt
+++ b/graph-lib/make/make.rkt
@@ -201,7 +201,9 @@
 
 (run! `(,(find-executable-path-or-fail "raco")
         "cover"
-	"-s" "doc"
-	"-s" "test"
+        "-s" "doc"
+        "-s" "test"
+        "-f" "html"
+        "-f" "coveralls"
         "-v"
         ,@(exclude-dirs rkt-files (list "make/"))))