diff --git a/.travis.yml b/.travis.yml
index 0bb60273..5fc60617 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,8 @@ before_install:
   - git fetch origin v2.0.0:v2.0.0
   - git fetch origin test/attributes:test/attributes
   - git fetch origin test/master:test/master
-  - sudo apt-get install libicu-dev -y
+  - script/vendor-deb libicu48 libicu-dev
+  - bundle config build.charlock_holmes --with-icu-include=$(pwd)/vendor/debs/include --with-icu-lib=$(pwd)/vendor/debs/lib
   - git submodule init
   - git submodule sync --quiet
   - script/fast-submodule-update
diff --git a/script/vendor-deb b/script/vendor-deb
new file mode 100755
index 00000000..ebad3e76
--- /dev/null
+++ b/script/vendor-deb
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -ex
+
+cd "$(dirname "$0")/.."
+
+mkdir -p vendor/apt vendor/debs
+
+(cd vendor/apt && apt-get --assume-yes download "$@")
+
+for deb in vendor/apt/*.deb; do
+  ar p $deb data.tar.gz | tar -vzxC vendor/debs --strip-components=2
+done