diff --git a/Sources/NSLayoutConstraint+Theme.swift b/Sources/NSLayoutConstraint+Theme.swift
index 45b6ecb..8d1d862 100644
--- a/Sources/NSLayoutConstraint+Theme.swift
+++ b/Sources/NSLayoutConstraint+Theme.swift
@@ -1,12 +1,11 @@
 //
-//  File.swift
-//  
+//  NSLayoutConstraint+Theme.swift
+//
+//  Setters used by ThemePickers operating on NSLayoutConstraint.
 //
 //  Created by Ryan Tan on 29/11/22.
 //
 
-import Foundation
-
 import UIKit
 
 #if os(iOS)
diff --git a/Sources/UIKit+Theme.swift b/Sources/UIKit+Theme.swift
index 3f72fb1..d4b6e6b 100644
--- a/Sources/UIKit+Theme.swift
+++ b/Sources/UIKit+Theme.swift
@@ -420,6 +420,13 @@ import UIKit
         set { setThemePicker(self, "setConstraintConstant:", newValue) }
     }
 }
+@objc public extension UIStackView
+{
+    var theme_stackViewSpacing: ThemeCGFloatPicker? {
+        get { return getThemePicker(self, "setStackViewSpacing:") as? ThemeCGFloatPicker }
+        set { setThemePicker(self, "setStackViewSpacing:", newValue) }
+    }
+}
 @available(iOS 13.0, *)
 @objc public extension UINavigationBarAppearance
 {
diff --git a/Sources/UIStackview+Theme.swift b/Sources/UIStackview+Theme.swift
new file mode 100644
index 0000000..04ba6af
--- /dev/null
+++ b/Sources/UIStackview+Theme.swift
@@ -0,0 +1,21 @@
+//
+//  UIStackview+Theme.swift
+//
+//  Setters used by ThemePickers operating on UIStackView.
+//
+//  Created by Ryan Tan on 29/11/22.
+//
+
+import UIKit
+
+#if os(iOS)
+extension UIStackView {
+
+    /// Sets spacing on stack views..
+    ///
+    /// Triggered by SwiftTheme when theme_stackViewSpacing is used.
+    @objc func setStackViewSpacing(_ value: CGFloat) {
+        spacing = value
+    }
+}
+#endif