diff --git a/docs/release-notes.md b/docs/release-notes.md
index 6311d7dc..da3b666c 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -1,6 +1,11 @@
 ← [README](README.md)
 
 # Release notes
+## Upcoming release
+* For mod authors:
+  * Removed warning for mods which use `dynamic`.  
+    _This no longer causes errors on Linux/macOS after Stardew Valley 1.5.5._
+
 ## 3.14.3
 Released 12 May 2022 for Stardew Valley 1.5.6 or later.
 
diff --git a/src/SMAPI.Toolkit/Framework/ModData/ModWarning.cs b/src/SMAPI.Toolkit/Framework/ModData/ModWarning.cs
index afebba87..cf804df4 100644
--- a/src/SMAPI.Toolkit/Framework/ModData/ModWarning.cs
+++ b/src/SMAPI.Toolkit/Framework/ModData/ModWarning.cs
@@ -19,6 +19,7 @@ namespace StardewModdingAPI.Toolkit.Framework.ModData
         PatchesGame = 4,
 
         /// <summary>The mod uses the <c>dynamic</c> keyword which won't work on Linux/macOS.</summary>
+        [Obsolete("This value is no longer used by SMAPI and will be removed in the upcoming SMAPI 4.0.0.")]
         UsesDynamic = 8,
 
         /// <summary>The mod references specialized 'unvalidated update tick' events which may impact stability.</summary>
diff --git a/src/SMAPI/Framework/Logging/LogManager.cs b/src/SMAPI/Framework/Logging/LogManager.cs
index b94807b5..ed5b6959 100644
--- a/src/SMAPI/Framework/Logging/LogManager.cs
+++ b/src/SMAPI/Framework/Logging/LogManager.cs
@@ -511,11 +511,6 @@ namespace StardewModdingAPI.Framework.Logging
                     "These mods have no update keys in their manifest. SMAPI may not notify you about updates for these",
                     "mods. Consider notifying the mod authors about this problem."
                 );
-
-                // not crossplatform
-                this.LogModWarningGroup(modsWithWarnings, ModWarning.UsesDynamic, LogLevel.Debug, "Not crossplatform",
-                    "These mods use the 'dynamic' keyword, and won't work on Linux/macOS."
-                );
             }
         }
 
diff --git a/src/SMAPI/Framework/ModLoading/AssemblyLoader.cs b/src/SMAPI/Framework/ModLoading/AssemblyLoader.cs
index a6756e0e..fb5ebc01 100644
--- a/src/SMAPI/Framework/ModLoading/AssemblyLoader.cs
+++ b/src/SMAPI/Framework/ModLoading/AssemblyLoader.cs
@@ -414,11 +414,6 @@ namespace StardewModdingAPI.Framework.ModLoading
                     mod.SetWarning(ModWarning.UsesUnvalidatedUpdateTick);
                     break;
 
-                case InstructionHandleResult.DetectedDynamic:
-                    template = $"{logPrefix}Detected 'dynamic' keyword ($phrase) in assembly {filename}.";
-                    mod.SetWarning(ModWarning.UsesDynamic);
-                    break;
-
                 case InstructionHandleResult.DetectedConsoleAccess:
                     template = $"{logPrefix}Detected direct console access ($phrase) in assembly {filename}.";
                     mod.SetWarning(ModWarning.AccessesConsole);
diff --git a/src/SMAPI/Framework/ModLoading/InstructionHandleResult.cs b/src/SMAPI/Framework/ModLoading/InstructionHandleResult.cs
index baffc50e..e3f108cb 100644
--- a/src/SMAPI/Framework/ModLoading/InstructionHandleResult.cs
+++ b/src/SMAPI/Framework/ModLoading/InstructionHandleResult.cs
@@ -20,9 +20,6 @@ namespace StardewModdingAPI.Framework.ModLoading
         /// <summary>The instruction is compatible, but affects the save serializer in a way that may make saves unloadable without the mod.</summary>
         DetectedSaveSerializer,
 
-        /// <summary>The instruction is compatible, but uses the <c>dynamic</c> keyword which won't work on Linux/macOS.</summary>
-        DetectedDynamic,
-
         /// <summary>The instruction is compatible, but references <see cref="ISpecializedEvents.UnvalidatedUpdateTicking"/> or <see cref="ISpecializedEvents.UnvalidatedUpdateTicked"/> which may impact stability.</summary>
         DetectedUnvalidatedUpdateTick,
 
diff --git a/src/SMAPI/Metadata/InstructionMetadata.cs b/src/SMAPI/Metadata/InstructionMetadata.cs
index 9b56f963..4d512546 100644
--- a/src/SMAPI/Metadata/InstructionMetadata.cs
+++ b/src/SMAPI/Metadata/InstructionMetadata.cs
@@ -67,7 +67,6 @@ namespace StardewModdingAPI.Metadata
             /****
             ** detect code which may impact game stability
             ****/
-            yield return new TypeFinder("System.Runtime.CompilerServices.CallSite", InstructionHandleResult.DetectedDynamic);
             yield return new FieldFinder(typeof(SaveGame).FullName!, new[] { nameof(SaveGame.serializer), nameof(SaveGame.farmerSerializer), nameof(SaveGame.locationSerializer) }, InstructionHandleResult.DetectedSaveSerializer);
             yield return new EventFinder(typeof(ISpecializedEvents).FullName!, new[] { nameof(ISpecializedEvents.UnvalidatedUpdateTicked), nameof(ISpecializedEvents.UnvalidatedUpdateTicking) }, InstructionHandleResult.DetectedUnvalidatedUpdateTick);