diff --git a/Example/PerspectiveTransform.xcodeproj/project.pbxproj b/Example/PerspectiveTransform.xcodeproj/project.pbxproj
index 3c122dd..93385f6 100644
--- a/Example/PerspectiveTransform.xcodeproj/project.pbxproj
+++ b/Example/PerspectiveTransform.xcodeproj/project.pbxproj
@@ -84,7 +84,7 @@
 		4B58ECEE1C799C2A00F1BC00 /* BasisVectorSpec.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = BasisVectorSpec.swift; sourceTree = "<group>"; };
 		4B58ECF61C79C3C200F1BC00 /* CATransform3Dfrom2DSpec.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CATransform3Dfrom2DSpec.swift; sourceTree = "<group>"; };
 		4B611DD1204BE66F00F67E1E /* libopencv_imgproc.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libopencv_imgproc.dylib; path = /usr/local/lib/libopencv_imgproc.dylib; sourceTree = "<absolute>"; };
-		4B714005205E16AA004441A8 /* Gemfile */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; name = Gemfile; path = ../Gemfile; sourceTree = "<group>"; };
+		4B714005205E16AA004441A8 /* Gemfile */ = {isa = PBXFileReference; explicitFileType = text.script.ruby; fileEncoding = 4; name = Gemfile; path = ../Gemfile; sourceTree = "<group>"; };
 		4B714007205E16E8004441A8 /* Gemfile.lock */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; name = Gemfile.lock; path = ../Gemfile.lock; sourceTree = "<group>"; };
 		4B714009205E21C9004441A8 /* Podfile.lock */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = Podfile.lock; sourceTree = "<group>"; };
 		4B74DB2C203BAA1A0030F41B /* CALayerTransformSpec.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CALayerTransformSpec.swift; sourceTree = "<group>"; };
diff --git a/Gemfile b/Gemfile
index 6e50758..e79a33a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'cocoapods'
+gem 'cocoapods', '>= 1.6.0.beta'    # debug pod lib lint test_spec failures on travis
 gem 'xcpretty'      # to simulate travis output
 gem 'xcpretty-travis-formatter'
 gem 'travis'        # to debug builds, see https://docs.travis-ci.com/user/running-build-in-debug-mode/
diff --git a/Gemfile.lock b/Gemfile.lock
index 97f4646..eb96c8b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,26 +11,26 @@ GEM
     atomos (0.1.3)
     backports (3.11.4)
     claide (1.0.2)
-    cocoapods (1.5.3)
+    cocoapods (1.6.0.beta.2)
       activesupport (>= 4.0.2, < 5)
       claide (>= 1.0.2, < 2.0)
-      cocoapods-core (= 1.5.3)
+      cocoapods-core (= 1.6.0.beta.2)
       cocoapods-deintegrate (>= 1.0.2, < 2.0)
-      cocoapods-downloader (>= 1.2.0, < 2.0)
+      cocoapods-downloader (>= 1.2.2, < 2.0)
       cocoapods-plugins (>= 1.0.0, < 2.0)
       cocoapods-search (>= 1.0.0, < 2.0)
       cocoapods-stats (>= 1.0.0, < 2.0)
-      cocoapods-trunk (>= 1.3.0, < 2.0)
+      cocoapods-trunk (>= 1.3.1, < 2.0)
       cocoapods-try (>= 1.1.0, < 2.0)
       colored2 (~> 3.1)
       escape (~> 0.0.4)
       fourflusher (~> 2.0.1)
       gh_inspector (~> 1.0)
-      molinillo (~> 0.6.5)
+      molinillo (~> 0.6.6)
       nap (~> 1.0)
-      ruby-macho (~> 1.1)
-      xcodeproj (>= 1.5.7, < 2.0)
-    cocoapods-core (1.5.3)
+      ruby-macho (~> 1.3, >= 1.3.1)
+      xcodeproj (>= 1.7.0, < 2.0)
+    cocoapods-core (1.6.0.beta.2)
       activesupport (>= 4.0.2, < 6)
       fuzzy_match (~> 2.0.4)
       nap (~> 1.0)
@@ -114,7 +114,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  cocoapods
+  cocoapods (>= 1.6.0.beta)
   travis
   xcpretty
   xcpretty-travis-formatter