diff --git a/scripts/test-all.sh b/scripts/test-all.sh
index 5c78312c..cf064f7a 100755
--- a/scripts/test-all.sh
+++ b/scripts/test-all.sh
@@ -24,7 +24,11 @@ prepare_sandbox () {
     for s in ${SOURCES[@]} ; do
         (cd "$s" && $CABAL sandbox init --sandbox=../.cabal-sandbox/ && $CABAL sandbox add-source .)
     done
-    $CABAL install --enable-tests ${SOURCES[@]}
+    if $TRAVIS ; then
+        travis_retry $CABAL install --enable-tests ${SOURCES[@]}
+    else
+        $CABAL install -vvv --enable-tests ${SOURCES[@]}
+    fi
 }
 
 test_each () {