diff --git a/.travis.yml b/.travis.yml
index c6458af..3e350dd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -57,6 +57,8 @@ jobs:
 
   - stage: CocoaPods
     osx_image: xcode10.2
+    before_install: 
+    - gem install cocoapods
     script:
     - pod spec lint --allow-warnings
     - pod lib lint --allow-warnings
diff --git a/FloatingPanel.podspec b/FloatingPanel.podspec
index b0df011..215808e 100644
--- a/FloatingPanel.podspec
+++ b/FloatingPanel.podspec
@@ -13,7 +13,7 @@ The new interface displays the related contents and utilities in parallel as a u
   s.platform            = :ios, "10.0"
   s.source              = { :git => "https://github.com/SCENEE/FloatingPanel.git", :tag => "v#{s.version}" }
   s.source_files        = "Framework/Sources/*.swift"
-  s.swift_version       = "4.0"
+  s.swift_versions      = ["4.0", "4.2", "5.0"]
 
   s.framework           = "UIKit"