diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4bb3896..079e949 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,8 +13,11 @@ All notable changes to this package will be documented in this file.
 ### Android
 * Custom callbacks need the default in-window presentation. With `AndroidPaywallPresentation.Activity`, Unity is paused while the paywall is open, so each callback fails straight away and logs an error instead of leaving the paywall waiting.
 
+### Fixes
+* iOS paywalls now follow the orientations the game allows through `Screen.autorotateTo*` and `Screen.orientation`. Before, a landscape-only game could be rotated to portrait while a paywall was open, and stayed in portrait after it closed.
+
 ### Dependencies
-* iOS: the generated Podfile now requires SuperwallKit `>= 4.12.10, < 5.0`, the first versions with the custom callback API. A Podfile kept by an Append build is updated.
+* iOS: the generated Podfile now requires SuperwallKit `>= 4.19.1, < 5.0`. 4.12.10 added the custom callback API and 4.19.1 keeps paywalls to the game's orientations. A Podfile kept by an Append build is updated, unless you changed the SuperwallKit requirement by hand.
 
 ## [0.3.0]
 
diff --git a/Editor/SuperwallPostBuildProcessor.cs b/Editor/SuperwallPostBuildProcessor.cs
index 725871a..69acc98 100644
--- a/Editor/SuperwallPostBuildProcessor.cs
+++ b/Editor/SuperwallPostBuildProcessor.cs
@@ -13,6 +13,38 @@ public class SuperwallPostBuildProcessor : IPostprocessBuildWithReport
     {
         public int callbackOrder => 99;
 
+        // 4.12.10 added the custom callback API the bridge calls. 4.19.1 keeps a paywall to the
+        // orientations the game allows (Screen.autorotateTo*), and stops it leaving the game
+        // rotated after it closes.
+        public const string SuperwallKitPod = "pod 'SuperwallKit', '>= 4.19.1', '< 5.0'";
+
+        // Requirements earlier versions of this package wrote. A Podfile still naming one of these
+        // is moved to SuperwallKitPod; any other requirement was set by hand and is kept. Only the
+        // version part is spelled out here so native-sdk-bump.yml's rewrite of SuperwallKitPod
+        // leaves these alone.
+        private static readonly string[] PreviousSuperwallKitRequirements =
+        {
+            "'~> 4.0'",
+            "'>= 4.12.10', '< 5.0'",
+        };
+
+        /// <summary>
+        /// Moves a SuperwallKit requirement written by an earlier version of this package to the
+        /// current one. Returns the Podfile unchanged if it has none.
+        /// </summary>
+        public static string UpdateSuperwallKitRequirement(string podfileContent)
+        {
+            foreach (string requirement in PreviousSuperwallKitRequirements)
+            {
+                string previousPod = "pod 'SuperwallKit', " + requirement;
+                if (previousPod != SuperwallKitPod)
+                {
+                    podfileContent = podfileContent.Replace(previousPod, SuperwallKitPod);
+                }
+            }
+            return podfileContent;
+        }
+
         public void OnPostprocessBuild(BuildReport report)
         {
 #if UNITY_IOS
@@ -24,10 +56,6 @@ public void OnPostprocessBuild(BuildReport report)
         }
 
 #if UNITY_IOS
-        // 4.12.10 added the custom callback API the bridge calls.
-        private const string SuperwallKitPod = "pod 'SuperwallKit', '>= 4.12.10', '< 5.0'";
-        private const string LegacySuperwallKitPod = "pod 'SuperwallKit', '~> 4.0'";
-
         private static void PostProcessIOS(string buildPath)
         {
             string podfilePath = Path.Combine(buildPath, "Podfile");
@@ -84,12 +112,16 @@ private static void PostProcessIOS(string buildPath)
                     File.WriteAllText(podfilePath, podfileContent);
                     Debug.Log("[Superwall] Added SuperwallKit pod to existing Podfile");
                 }
-                else if (podfileContent.Contains(LegacySuperwallKitPod))
+                else
                 {
                     // An Append build keeps the Podfile from the last export. Without this, its old
-                    // requirement lets Podfile.lock hold a SuperwallKit the bridge can't compile against.
-                    File.WriteAllText(podfilePath, podfileContent.Replace(LegacySuperwallKitPod, SuperwallKitPod));
-                    Debug.Log("[Superwall] Updated the SuperwallKit requirement in the existing Podfile");
+                    // requirement lets Podfile.lock hold a SuperwallKit older than the bridge needs.
+                    string updated = UpdateSuperwallKitRequirement(podfileContent);
+                    if (updated != podfileContent)
+                    {
+                        File.WriteAllText(podfilePath, updated);
+                        Debug.Log("[Superwall] Updated the SuperwallKit requirement in the existing Podfile");
+                    }
                 }
             }
 
diff --git a/Tests/Editor/PodfileRequirementTests.cs b/Tests/Editor/PodfileRequirementTests.cs
new file mode 100644
index 0000000..4da606a
--- /dev/null
+++ b/Tests/Editor/PodfileRequirementTests.cs
@@ -0,0 +1,42 @@
+using NUnit.Framework;
+using Superwall.Editor;
+
+namespace Superwall.Editor.Tests
+{
+    class PodfileRequirementTests
+    {
+        private static string Podfile(string pod) =>
+            "platform :ios, '15.0'\nuse_frameworks!\n\ntarget 'UnityFramework' do\n  " + pod + "\nend\n";
+
+        [Test]
+        public void SuperwallKitPod_RequiresTheVersionThatKeepsPaywallsToTheGamesOrientations()
+        {
+            Assert.AreEqual("pod 'SuperwallKit', '>= 4.19.1', '< 5.0'", SuperwallPostBuildProcessor.SuperwallKitPod);
+        }
+
+        [TestCase("pod 'SuperwallKit', '~> 4.0'")]
+        [TestCase("pod 'SuperwallKit', '>= 4.12.10', '< 5.0'")]
+        public void UpdateSuperwallKitRequirement_MovesRequirementsThisPackageWroteBefore(string previousPod)
+        {
+            string updated = SuperwallPostBuildProcessor.UpdateSuperwallKitRequirement(Podfile(previousPod));
+
+            Assert.AreEqual(Podfile(SuperwallPostBuildProcessor.SuperwallKitPod), updated);
+        }
+
+        [Test]
+        public void UpdateSuperwallKitRequirement_LeavesTheCurrentRequirementAlone()
+        {
+            string podfile = Podfile(SuperwallPostBuildProcessor.SuperwallKitPod);
+
+            Assert.AreEqual(podfile, SuperwallPostBuildProcessor.UpdateSuperwallKitRequirement(podfile));
+        }
+
+        [Test]
+        public void UpdateSuperwallKitRequirement_KeepsARequirementSetByHand()
+        {
+            string podfile = Podfile("pod 'SuperwallKit', '4.19.3'");
+
+            Assert.AreEqual(podfile, SuperwallPostBuildProcessor.UpdateSuperwallKitRequirement(podfile));
+        }
+    }
+}
diff --git a/Tests/Editor/PodfileRequirementTests.cs.meta b/Tests/Editor/PodfileRequirementTests.cs.meta
new file mode 100644
index 0000000..058c79e
--- /dev/null
+++ b/Tests/Editor/PodfileRequirementTests.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 475dada1ffcc4deabb158715b5904d53
\ No newline at end of file