diff --git a/.travis.yml b/.travis.yml
index 03a4f14ab..87226ec42 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,9 +32,16 @@ matrix:
     - {osx_image: xcode9.3,     env: 'SWFT=4.1  PLAT=watchOS  DST="OS=3.2,name=Apple Watch - 38mm"',        os: osx, language: objective-c}
     - {osx_image: xcode9.4,     env: 'SWFT=4.1  PLAT=watchOS  DST="OS=4.3,name=Apple Watch - 38mm"',        os: osx, language: objective-c}
 
-    - {os: linux, dist: trusty, sudo: required, language: generic, env: 'SWIFT_BUILD_VERSION=3  SWIFT_VERSION=4.0  TEST=1'}
-    - {os: linux, dist: trusty, sudo: required, language: generic, env: 'SWIFT_BUILD_VERSION=4  SWIFT_VERSION=4.0  TEST=1'}
-    - {os: linux, dist: trusty, sudo: required, language: generic, env: 'SWIFT_BUILD_VERSION=4  SWIFT_VERSION=DEVELOPMENT-SNAPSHOT-2018-06-20-a'}
+    # Swift 3.2
+    - {os: linux, dist: trusty, sudo: required, language: generic, env: 'SWIFT_BUILD_VERSION=3  SWIFT_VERSION=4.1.2  TEST=1'}
+    # Swift 3.3
+    - {os: linux, dist: trusty, sudo: required, language: generic, env: 'SWIFT_BUILD_VERSION=3  SWIFT_VERSION=DEVELOPMENT-SNAPSHOT-2018-06-20-a  TEST=1'}
+    # Swift 4.0
+    - {os: linux, dist: trusty, sudo: required, language: generic, env: 'SWIFT_BUILD_VERSION=4  SWIFT_VERSION=4.0.3  TEST=1'}
+    # Swift 4.1
+    - {os: linux, dist: trusty, sudo: required, language: generic, env: 'SWIFT_BUILD_VERSION=4  SWIFT_VERSION=4.1.2  TEST=1'}
+    # Swift 4.2
+    - {os: linux, dist: trusty, sudo: required, language: generic, env: 'SWIFT_BUILD_VERSION=4  SWIFT_VERSION=DEVELOPMENT-SNAPSHOT-2018-06-20-a  TEST=1'}
 
 before_install:
   if [ "$TRAVIS_OS_NAME" == "linux" ]; then
@@ -48,7 +55,6 @@ install:
       xcodebuild -scheme PromiseKit -quiet -destination "$DST" build;
     fi;;
   *)
-    swift --version;
     swift build -Xswiftc -swift-version -Xswiftc $SWIFT_BUILD_VERSION;;
   esac
 script: