diff --git a/wasm/CHANGELOG.md b/wasm/CHANGELOG.md
index 895202c14cdc..f6edf2803583 100644
--- a/wasm/CHANGELOG.md
+++ b/wasm/CHANGELOG.md
@@ -5,6 +5,7 @@ This changelog summarizes major changes to the WebAssembly engine implemented in
 ## Version 24.2.0
 
 * Updated developer metadata of Maven artifacts.
+* Deprecated the `--wasm.AsyncParsingBinarySize` and `--wasm.AsyncParsingStackSize` options. These options no longer have any effect and will be removed in a future release.
 
 ## Version 24.1.0
 
diff --git a/wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/WasmInstantiator.java b/wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/WasmInstantiator.java
index e00cfe146092..361155693484 100644
--- a/wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/WasmInstantiator.java
+++ b/wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/WasmInstantiator.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -50,8 +50,6 @@
 import org.graalvm.collections.MapCursor;
 import org.graalvm.wasm.constants.BytecodeBitEncoding;
 import org.graalvm.wasm.constants.SegmentMode;
-import org.graalvm.wasm.exception.Failure;
-import org.graalvm.wasm.exception.WasmException;
 import org.graalvm.wasm.memory.WasmMemory;
 import org.graalvm.wasm.memory.WasmMemoryFactory;
 import org.graalvm.wasm.nodes.WasmCallStubNode;
@@ -74,22 +72,6 @@
  * Creates wasm instances by converting parser nodes into Truffle nodes.
  */
 public class WasmInstantiator {
-    private static final int MIN_DEFAULT_STACK_SIZE = 1_000_000;
-    private static final int MAX_DEFAULT_ASYNC_STACK_SIZE = 10_000_000;
-
-    private static class ParsingExceptionHandler implements Thread.UncaughtExceptionHandler {
-        private Throwable parsingException = null;
-
-        @Override
-        public void uncaughtException(Thread t, Throwable e) {
-            this.parsingException = e;
-        }
-
-        public Throwable parsingException() {
-            return parsingException;
-        }
-    }
-
     private final WasmLanguage language;
 
     @TruffleBoundary
@@ -101,30 +83,7 @@ public WasmInstantiator(WasmLanguage language) {
     public WasmInstance createInstance(WasmContext context, WasmModule module, TruffleContext truffleContext) {
         WasmInstance instance = new WasmInstance(context, module, truffleContext);
         instance.createLinkActions();
-        int binarySize = instance.module().bytecodeLength();
-        final int asyncParsingBinarySize = WasmOptions.AsyncParsingBinarySize.getValue(context.environment().getOptions());
-        if (binarySize < asyncParsingBinarySize || !context.environment().isCreateThreadAllowed()) {
-            instantiateCodeEntries(context, instance);
-        } else {
-            final Runnable parsing = () -> instantiateCodeEntries(context, instance);
-            final String name = "wasm-parsing-thread(" + instance.name() + ")";
-            final int requestedSize = WasmOptions.AsyncParsingStackSize.getValue(context.environment().getOptions()) * 1000;
-            final int defaultSize = Math.max(MIN_DEFAULT_STACK_SIZE, Math.min(2 * binarySize, MAX_DEFAULT_ASYNC_STACK_SIZE));
-            final int stackSize = requestedSize != 0 ? requestedSize : defaultSize;
-            final Thread parsingThread = context.environment().newTruffleThreadBuilder(parsing).stackSize(stackSize).build();
-            parsingThread.setName(name);
-            final ParsingExceptionHandler handler = new ParsingExceptionHandler();
-            parsingThread.setUncaughtExceptionHandler(handler);
-            parsingThread.start();
-            try {
-                parsingThread.join();
-                if (handler.parsingException() != null) {
-                    throw WasmException.create(Failure.UNSPECIFIED_INVALID, "Asynchronous parsing failed.");
-                }
-            } catch (InterruptedException e) {
-                throw WasmException.create(Failure.UNSPECIFIED_INVALID, "Asynchronous parsing interrupted.");
-            }
-        }
+        instantiateCodeEntries(context, instance);
         return instance;
     }
 
diff --git a/wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/WasmOptions.java b/wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/WasmOptions.java
index 1545adfac8ad..3ac8b74aefcb 100644
--- a/wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/WasmOptions.java
+++ b/wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/WasmOptions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -51,10 +51,12 @@ public class WasmOptions {
     @Option(help = "A comma-separated list of builtin modules to use.", category = OptionCategory.USER, stability = OptionStability.STABLE, usageSyntax = "[<linkingName>:]<builtinModuleName>,[<linkingName>:]<builtinModuleName>,...")//
     public static final OptionKey<String> Builtins = new OptionKey<>("");
 
-    @Option(help = "The minimal binary size for which to use async parsing. If threads are not supported, async parsing will not be used.", category = OptionCategory.USER, stability = OptionStability.STABLE, usageSyntax = "[0, inf)")//
+    @Option(help = "The minimal binary size for which to use async parsing. If threads are not supported, async parsing will not be used.", category = OptionCategory.USER, stability = OptionStability.STABLE, usageSyntax = "[0, inf)", //
+                    deprecated = true, deprecationMessage = "Option no longer has any effect and can be safely omitted.")//
     public static final OptionKey<Integer> AsyncParsingBinarySize = new OptionKey<>(100_000);
 
-    @Option(help = "The stack size in kilobytes to use during async parsing, or zero to use defaults.", category = OptionCategory.USER, stability = OptionStability.STABLE, usageSyntax = "[0, inf)")//
+    @Option(help = "The stack size in kilobytes to use during async parsing, or zero to use defaults.", category = OptionCategory.USER, stability = OptionStability.STABLE, usageSyntax = "[0, inf)", //
+                    deprecated = true, deprecationMessage = "Option no longer has any effect and can be safely omitted.")//
     public static final OptionKey<Integer> AsyncParsingStackSize = new OptionKey<>(0);
 
     @Option(help = "A comma-separated list of pre-opened Wasi directories.", category = OptionCategory.USER, stability = OptionStability.STABLE, usageSyntax = "[<virtualDir>::]<hostDir>,[<virtualDir>::]<hostDir>,...")//