diff --git a/script/bootstrap.py b/script/bootstrap.py
index b0a528f760..1efea3c289 100755
--- a/script/bootstrap.py
+++ b/script/bootstrap.py
@@ -165,7 +165,7 @@ def update_clang():
 
 def download_sysroot(target_arch):
   if target_arch == 'ia32':
-     target_arch = 'i386'
+    target_arch = 'i386'
   if target_arch == 'x64':
     target_arch = 'amd64'
   execute_stdout([os.path.join(SOURCE_ROOT, 'script', 'install-sysroot.py'),
diff --git a/script/install-sysroot.py b/script/install-sysroot.py
index 16df6f7b9e..be68fbad0a 100755
--- a/script/install-sysroot.py
+++ b/script/install-sysroot.py
@@ -30,15 +30,15 @@ from lib.util import get_host_arch
 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
 URL_PREFIX = 'https://github.com'
 URL_PATH = 'atom/debian-sysroot-image-creator/releases/download'
-REVISION_AMD64 = 'v0.3.0'
-REVISION_I386 = 'v0.3.0'
-REVISION_ARM = 'v0.3.0'
+REVISION_AMD64 = 'v0.4.0'
+REVISION_I386 = 'v0.4.0'
+REVISION_ARM = 'v0.4.0'
 TARBALL_AMD64 = 'debian_wheezy_amd64_sysroot.tgz'
 TARBALL_I386 = 'debian_wheezy_i386_sysroot.tgz'
 TARBALL_ARM = 'debian_wheezy_arm_sysroot.tgz'
-TARBALL_AMD64_SHA1SUM = '3dc6f553c3f4e54166ac1264b7754cddc01942e4'
-TARBALL_I386_SHA1SUM = '62d2490de201f73b3774868f7ab82b2a48acf3c0'
-TARBALL_ARM_SHA1SUM = '1110793341e7a3c12adfe5e53138d692a22c99bc'
+TARBALL_AMD64_SHA1SUM = 'a7e8faa99b681317969ac450a27233925bdeed62'
+TARBALL_I386_SHA1SUM = '9fc827eddc26e562c0a0b2586be5dc075e570e10'
+TARBALL_ARM_SHA1SUM = 'bfa4233708ab937d682a14e8d87ddba3cadb6eae'
 SYSROOT_DIR_AMD64 = 'debian_wheezy_amd64-sysroot'
 SYSROOT_DIR_I386 = 'debian_wheezy_i386-sysroot'
 SYSROOT_DIR_ARM = 'debian_wheezy_arm-sysroot'