diff --git a/Gemfile b/Gemfile
index aa1cd91..a891ee5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,3 @@
-# A sample Gemfile
 source "https://rubygems.org"
 
-gem 'cocoapods', '1.6.0.beta.2'
+gem 'cocoapods'
diff --git a/Gemfile.lock b/Gemfile.lock
index 4f617f2..3cbce56 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,65 +1,72 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    CFPropertyList (3.0.0)
-    activesupport (4.2.10)
+    CFPropertyList (3.0.1)
+    activesupport (4.2.11.1)
       i18n (~> 0.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
+    algoliasearch (1.27.1)
+      httpclient (~> 2.8, >= 2.8.3)
+      json (>= 1.5.1)
     atomos (0.1.3)
-    claide (1.0.2)
-    cocoapods (1.6.0.beta.2)
+    claide (1.0.3)
+    cocoapods (1.8.4)
       activesupport (>= 4.0.2, < 5)
       claide (>= 1.0.2, < 2.0)
-      cocoapods-core (= 1.6.0.beta.2)
-      cocoapods-deintegrate (>= 1.0.2, < 2.0)
+      cocoapods-core (= 1.8.4)
+      cocoapods-deintegrate (>= 1.0.3, < 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 (>= 1.3.1, < 2.0)
+      cocoapods-trunk (>= 1.4.0, < 2.0)
       cocoapods-try (>= 1.1.0, < 2.0)
       colored2 (~> 3.1)
       escape (~> 0.0.4)
-      fourflusher (~> 2.0.1)
+      fourflusher (>= 2.3.0, < 3.0)
       gh_inspector (~> 1.0)
       molinillo (~> 0.6.6)
       nap (~> 1.0)
-      ruby-macho (~> 1.3, >= 1.3.1)
-      xcodeproj (>= 1.7.0, < 2.0)
-    cocoapods-core (1.6.0.beta.2)
+      ruby-macho (~> 1.4)
+      xcodeproj (>= 1.11.1, < 2.0)
+    cocoapods-core (1.8.4)
       activesupport (>= 4.0.2, < 6)
+      algoliasearch (~> 1.0)
+      concurrent-ruby (~> 1.1)
       fuzzy_match (~> 2.0.4)
       nap (~> 1.0)
-    cocoapods-deintegrate (1.0.2)
+    cocoapods-deintegrate (1.0.4)
     cocoapods-downloader (1.2.2)
     cocoapods-plugins (1.0.0)
       nap
     cocoapods-search (1.0.0)
-    cocoapods-stats (1.0.0)
-    cocoapods-trunk (1.3.1)
+    cocoapods-stats (1.1.0)
+    cocoapods-trunk (1.4.1)
       nap (>= 0.8, < 2.0)
       netrc (~> 0.11)
     cocoapods-try (1.1.0)
     colored2 (3.1.2)
-    concurrent-ruby (1.1.3)
+    concurrent-ruby (1.1.5)
     escape (0.0.4)
-    fourflusher (2.0.1)
+    fourflusher (2.3.1)
     fuzzy_match (2.0.4)
     gh_inspector (1.1.3)
+    httpclient (2.8.3)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    minitest (5.11.3)
+    json (2.2.0)
+    minitest (5.12.2)
     molinillo (0.6.6)
     nanaimo (0.2.6)
     nap (1.1.0)
     netrc (0.11.0)
-    ruby-macho (1.3.1)
+    ruby-macho (1.4.0)
     thread_safe (0.3.6)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    xcodeproj (1.7.0)
+    xcodeproj (1.13.0)
       CFPropertyList (>= 2.3.3, < 4.0)
       atomos (~> 0.1.3)
       claide (>= 1.0.2, < 2.0)
@@ -70,7 +77,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  cocoapods (= 1.6.0.beta.2)
+  cocoapods
 
 BUNDLED WITH
-   1.17.1
+   1.17.3
diff --git a/Package.swift b/Package.swift
index 021a330..6bbec9c 100644
--- a/Package.swift
+++ b/Package.swift
@@ -46,4 +46,4 @@ let package = Package(
             ]
         ]
     ]).write()
-#endif
\ No newline at end of file
+#endif
diff --git a/RxOptional.podspec b/RxOptional.podspec
index fa5f371..31cf5c2 100644
--- a/RxOptional.podspec
+++ b/RxOptional.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name        = 'RxOptional'
-  s.version     = '4.0.0'
+  s.version     = '4.1.0'
   s.summary     = 'RxSwift extensions for Swift optionals and Occupiable types'
 
   s.description = <<-DESC
@@ -20,7 +20,7 @@ Pod::Spec.new do |s|
   s.watchos.deployment_target = '3.0'
   s.tvos.deployment_target = '9.0'
 
-  s.source_files = 'Sources/*.swift'
+  s.source_files = 'Sources/**/*.swift'
 
   s.dependency 'RxSwift', '~> 5'
   s.dependency 'RxCocoa', '~> 5'