diff --git a/.travis.yml b/.travis.yml
index f9aae7b..7167f5e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,3 +8,4 @@ script:
 cache:
   directories:
       - /nix/store
+  timeout: 600
diff --git a/mail-server/users.nix b/mail-server/users.nix
index a2728f0..ef7d137 100644
--- a/mail-server/users.nix
+++ b/mail-server/users.nix
@@ -50,7 +50,7 @@ let
           chown "${name}:${vmailGroupName}" "/var/sieve/${name}"
           chmod 770 "/var/sieve/${name}"
         fi
-        cat << EOF > "/var/sieve/${name}/default.sieve"
+        cat << 'EOF' > "/var/sieve/${name}/default.sieve"
         ${sieveScript}
         EOF
         chown "${name}:${vmailGroupName}" "/var/sieve/${name}/default.sieve"