diff --git a/Libraries/LibWeb/Encoding/TextDecoderStream.cpp b/Libraries/LibWeb/Encoding/TextDecoderStream.cpp
index d69d261279..7aeda02506 100644
--- a/Libraries/LibWeb/Encoding/TextDecoderStream.cpp
+++ b/Libraries/LibWeb/Encoding/TextDecoderStream.cpp
@@ -15,6 +15,7 @@
 #include <LibWeb/Bindings/TextDecoder.h>
 #include <LibWeb/Bindings/TextDecoderStream.h>
 #include <LibWeb/Encoding/TextDecoderStream.h>
+#include <LibWeb/HTML/Scripting/TemporaryExecutionContext.h>
 #include <LibWeb/Streams/TransformStream.h>
 #include <LibWeb/Streams/TransformStreamOperations.h>
 #include <LibWeb/WebIDL/AbstractOperations.h>
@@ -59,6 +60,7 @@ WebIDL::ExceptionOr<GC::Ref<TextDecoderStream>> TextDecoderStream::construct_imp
     //    algorithm with this and chunk.
     auto transform_algorithm = GC::create_function(realm.heap(), [stream](JS::Value chunk) -> GC::Ref<WebIDL::Promise> {
         auto& realm = stream->realm();
+        HTML::TemporaryExecutionContext execution_context { realm };
         if (auto result = stream->decode_and_enqueue_chunk(chunk); result.is_error())
             return WebIDL::create_rejected_promise_from_exception(realm, result.release_error());
         return WebIDL::create_resolved_promise(realm, JS::js_undefined());
@@ -67,6 +69,7 @@ WebIDL::ExceptionOr<GC::Ref<TextDecoderStream>> TextDecoderStream::construct_imp
     // 8. Let flushAlgorithm be an algorithm which takes no arguments and runs the flush and enqueue algorithm with this.
     auto flush_algorithm = GC::create_function(realm.heap(), [stream]() -> GC::Ref<WebIDL::Promise> {
         auto& realm = stream->realm();
+        HTML::TemporaryExecutionContext execution_context { realm };
         if (auto result = stream->flush_and_enqueue(); result.is_error())
             return WebIDL::create_rejected_promise_from_exception(realm, result.release_error());
         return WebIDL::create_resolved_promise(realm, JS::js_undefined());
diff --git a/Libraries/LibWeb/Encoding/TextEncoderStream.cpp b/Libraries/LibWeb/Encoding/TextEncoderStream.cpp
index 6be87d9b93..3a904980bb 100644
--- a/Libraries/LibWeb/Encoding/TextEncoderStream.cpp
+++ b/Libraries/LibWeb/Encoding/TextEncoderStream.cpp
@@ -12,6 +12,7 @@
 #include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Bindings/TextEncoderStream.h>
 #include <LibWeb/Encoding/TextEncoderStream.h>
+#include <LibWeb/HTML/Scripting/TemporaryExecutionContext.h>
 #include <LibWeb/Streams/TransformStream.h>
 #include <LibWeb/Streams/TransformStreamOperations.h>
 #include <LibWeb/WebIDL/Promise.h>
@@ -38,6 +39,7 @@ GC::Ref<TextEncoderStream> TextEncoderStream::construct_impl(JS::Realm& realm)
     auto transform_algorithm = GC::create_function(realm.heap(), [stream](JS::Value chunk) -> GC::Ref<WebIDL::Promise> {
         auto& realm = stream->realm();
         auto& vm = realm.vm();
+        HTML::TemporaryExecutionContext execution_context { realm };
 
         if (auto result = stream->encode_and_enqueue_chunk(chunk); result.is_error()) {
             auto throw_completion = Bindings::exception_to_throw_completion(vm, result.exception());
@@ -51,6 +53,7 @@ GC::Ref<TextEncoderStream> TextEncoderStream::construct_impl(JS::Realm& realm)
     auto flush_algorithm = GC::create_function(realm.heap(), [stream]() -> GC::Ref<WebIDL::Promise> {
         auto& realm = stream->realm();
         auto& vm = realm.vm();
+        HTML::TemporaryExecutionContext execution_context { realm };
 
         if (auto result = stream->encode_and_flush(); result.is_error()) {
             auto throw_completion = Bindings::exception_to_throw_completion(vm, result.exception());
diff --git a/Tests/LibWeb/Text/expected/wpt-import/encoding/streams/realms.window.txt b/Tests/LibWeb/Text/expected/wpt-import/encoding/streams/realms.window.txt
index 173bb81dbe..2ca70d29cc 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/encoding/streams/realms.window.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/encoding/streams/realms.window.txt
@@ -2,17 +2,16 @@ Harness status: OK
 
 Found 12 tests
 
-4 Pass
-8 Fail
+12 Pass
 Pass	a TextEncoderStream object should be associated with the realm the constructor came from
 Pass	TextEncoderStream's readable and writable attributes should come from the same realm as the constructor definition
-Fail	the output chunks when read is called after write should come from the same realm as the constructor of TextEncoderStream
-Fail	the output chunks when write is called with a pending read should come from the same realm as the constructor of TextEncoderStream
-Fail	TypeError for unconvertable chunk should come from constructor realm of TextEncoderStream
+Pass	the output chunks when read is called after write should come from the same realm as the constructor of TextEncoderStream
+Pass	the output chunks when write is called with a pending read should come from the same realm as the constructor of TextEncoderStream
+Pass	TypeError for unconvertable chunk should come from constructor realm of TextEncoderStream
 Pass	a TextDecoderStream object should be associated with the realm the constructor came from
 Pass	TextDecoderStream's readable and writable attributes should come from the same realm as the constructor definition
-Fail	the result object when read is called after write should come from the same realm as the constructor of TextDecoderStream
-Fail	the result object when write is called with a pending read should come from the same realm as the constructor of TextDecoderStream
-Fail	TypeError for chunk with the wrong type should come from constructor realm of TextDecoderStream
-Fail	TypeError for invalid chunk should come from constructor realm of TextDecoderStream
-Fail	TypeError for incomplete input should come from constructor realm of TextDecoderStream
\ No newline at end of file
+Pass	the result object when read is called after write should come from the same realm as the constructor of TextDecoderStream
+Pass	the result object when write is called with a pending read should come from the same realm as the constructor of TextDecoderStream
+Pass	TypeError for chunk with the wrong type should come from constructor realm of TextDecoderStream
+Pass	TypeError for invalid chunk should come from constructor realm of TextDecoderStream
+Pass	TypeError for incomplete input should come from constructor realm of TextDecoderStream