diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4cdf8ae..138fb98 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## [0.4.1] 2018-05-04
+
+### Fixed
+- Marked `Manifest` class as `final`.
+
 ## [0.4.0] 2018-05-04
 
 ### Added
diff --git a/Sources/Manifest/Manifest.swift b/Sources/Manifest/Manifest.swift
index b32fec3..d4c7d1d 100644
--- a/Sources/Manifest/Manifest.swift
+++ b/Sources/Manifest/Manifest.swift
@@ -1,7 +1,7 @@
 import Foundation
 
 /// An interface for a package's manifest.
-public class Manifest: Codable {
+public final class Manifest: Codable {
     
     /// The current environment that the `Manifest` is being used in.
     public static var environment: Environment = .commandline
diff --git a/docs/Classes.html b/docs/Classes.html
index c708653..d0e3337 100644
--- a/docs/Classes.html
+++ b/docs/Classes.html
@@ -164,7 +164,7 @@ <h4>Declaration</h4>
                         <h4>Declaration</h4>
                         <div class="language">
                           <p class="aside-title">Swift</p>
-                          <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">class</span> <span class="kt">Manifest</span><span class="p">:</span> <span class="kt">Codable</span></code></pre>
+                          <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">final</span> <span class="kd">class</span> <span class="kt">Manifest</span><span class="p">:</span> <span class="kt">Codable</span></code></pre>
 
                         </div>
                       </div>
diff --git a/docs/Classes/Manifest.html b/docs/Classes/Manifest.html
index fe96e0f..2885cc5 100644
--- a/docs/Classes/Manifest.html
+++ b/docs/Classes/Manifest.html
@@ -107,7 +107,7 @@
             <h1>Manifest</h1>
               <div class="declaration">
                 <div class="language">
-                  <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">class</span> <span class="kt">Manifest</span><span class="p">:</span> <span class="kt">Codable</span></code></pre>
+                  <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">final</span> <span class="kd">class</span> <span class="kt">Manifest</span><span class="p">:</span> <span class="kt">Codable</span></code></pre>
 
                 </div>
               </div>
diff --git a/docs/docsets/.docset/Contents/Resources/Documents/Classes.html b/docs/docsets/.docset/Contents/Resources/Documents/Classes.html
index c708653..d0e3337 100644
--- a/docs/docsets/.docset/Contents/Resources/Documents/Classes.html
+++ b/docs/docsets/.docset/Contents/Resources/Documents/Classes.html
@@ -164,7 +164,7 @@ <h4>Declaration</h4>
                         <h4>Declaration</h4>
                         <div class="language">
                           <p class="aside-title">Swift</p>
-                          <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">class</span> <span class="kt">Manifest</span><span class="p">:</span> <span class="kt">Codable</span></code></pre>
+                          <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">final</span> <span class="kd">class</span> <span class="kt">Manifest</span><span class="p">:</span> <span class="kt">Codable</span></code></pre>
 
                         </div>
                       </div>
diff --git a/docs/docsets/.docset/Contents/Resources/Documents/Classes/Manifest.html b/docs/docsets/.docset/Contents/Resources/Documents/Classes/Manifest.html
index fe96e0f..2885cc5 100644
--- a/docs/docsets/.docset/Contents/Resources/Documents/Classes/Manifest.html
+++ b/docs/docsets/.docset/Contents/Resources/Documents/Classes/Manifest.html
@@ -107,7 +107,7 @@
             <h1>Manifest</h1>
               <div class="declaration">
                 <div class="language">
-                  <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">class</span> <span class="kt">Manifest</span><span class="p">:</span> <span class="kt">Codable</span></code></pre>
+                  <pre class="highlight swift"><code><span class="kd">public</span> <span class="kd">final</span> <span class="kd">class</span> <span class="kt">Manifest</span><span class="p">:</span> <span class="kt">Codable</span></code></pre>
 
                 </div>
               </div>
diff --git a/docs/docsets/.docset/Contents/Resources/Documents/undocumented.json b/docs/docsets/.docset/Contents/Resources/Documents/undocumented.json
index d19860c..a8715b6 100644
--- a/docs/docsets/.docset/Contents/Resources/Documents/undocumented.json
+++ b/docs/docsets/.docset/Contents/Resources/Documents/undocumented.json
@@ -2,14 +2,14 @@
   "warnings": [
     {
       "file": "/Users/calebkleveter/Development/Ether-CLI/Manifest/Sources/Manifest/Providers/Providers.swift",
-      "line": 107,
+      "line": 108,
       "symbol": "ProviderCodingKeys.type",
       "symbol_kind": "source.lang.swift.decl.enumelement",
       "warning": "undocumented"
     },
     {
       "file": "/Users/calebkleveter/Development/Ether-CLI/Manifest/Sources/Manifest/Providers/Providers.swift",
-      "line": 108,
+      "line": 109,
       "symbol": "ProviderCodingKeys.packages",
       "symbol_kind": "source.lang.swift.decl.enumelement",
       "warning": "undocumented"
diff --git a/docs/docsets/.tgz b/docs/docsets/.tgz
index 2f3ce6b..6edb9b5 100644
Binary files a/docs/docsets/.tgz and b/docs/docsets/.tgz differ