diff --git a/.travis.yml b/.travis.yml
index 49fca7f..69e1821 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,14 +17,22 @@ matrix:
- os: linux
dist: trusty
sudo: required
+ - os: linux
+ dist: trusty
+ sudo: required
+ env: SWIFT_SNAPSHOT=swift-4.2-DEVELOPMENT-SNAPSHOT-2018-06-19-a
- os: osx
osx_image: xcode9.2
sudo: required
env: SWIFT_SNAPSHOT=4.0.3
- os: osx
- osx_image: xcode9.3
+ osx_image: xcode9.4
sudo: required
- env: SWIFT_SNAPSHOT=4.1 JAZZY_ELIGIBLE=true
+ env: JAZZY_ELIGIBLE=true
+# - os: osx
+# osx_image: xcode9.4
+# sudo: required
+# env: SWIFT_SNAPSHOT=swift-4.2-DEVELOPMENT-SNAPSHOT-2018-06-04-a
before_install:
- git clone https://github.com/IBM-Swift/Package-Builder.git
diff --git a/README.md b/README.md
index be16dd9..d3cff5a 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ Our implementation of Digest authentication doesn't remember nonce values it gen
* [License](#license)
## Swift version
-The latest version of Kitura-CredentialsHTTP requires **Swift 4.0**. You can download this version of the Swift binaries by following this [link](https://swift.org/download/). Compatibility with other Swift versions is not guaranteed.
+The latest version of Kitura-CredentialsHTTP requires **Swift 4.0** or later. You can download this version of the Swift binaries by following this [link](https://swift.org/download/). Compatibility with other Swift versions is not guaranteed.
## API
diff --git a/docs/Classes.html b/docs/Classes.html
index c875efa..d3d5802 100644
--- a/docs/Classes.html
+++ b/docs/Classes.html
@@ -165,7 +165,7 @@ Declaration
diff --git a/docs/Classes/CredentialsHTTPBasic.html b/docs/Classes/CredentialsHTTPBasic.html
index 13f38ec..1738448 100644
--- a/docs/Classes/CredentialsHTTPBasic.html
+++ b/docs/Classes/CredentialsHTTPBasic.html
@@ -461,7 +461,7 @@