diff --git a/pkg/front_end/lib/src/fasta/incremental_compiler.dart b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
index f6a2f41..eaabec0 100644
--- a/pkg/front_end/lib/src/fasta/incremental_compiler.dart
+++ b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
@@ -171,7 +171,7 @@
 
   /// Guard against multiple computeDelta calls at the same time (possibly
   /// caused by lacking awaits etc).
-  Completer currentlyCompiling;
+  Completer<dynamic> currentlyCompiling;
 
   IncrementalCompiler.fromComponent(
       this.context, this.componentToInitializeFrom,
@@ -381,7 +381,7 @@
         ..problemsAsJson = problemsAsJson;
 
       // We're now done. Allow any waiting compile to start.
-      Completer currentlyCompilingLocal = currentlyCompiling;
+      Completer<dynamic> currentlyCompilingLocal = currentlyCompiling;
       currentlyCompiling = null;
       currentlyCompilingLocal.complete();
 
diff --git a/sdk/lib/io/io_sources.gni b/sdk/lib/io/io_sources.gni
index 7410a13..fb148df 100644
--- a/sdk/lib/io/io_sources.gni
+++ b/sdk/lib/io/io_sources.gni
@@ -20,6 +20,7 @@
   "io_sink.dart",
   "link.dart",
   "namespace_impl.dart",
+  "network_policy.dart",
   "network_profiling.dart",
   "overrides.dart",
   "platform.dart",
diff --git a/tools/VERSION b/tools/VERSION
index d193f51..a1eeaa4 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -27,5 +27,5 @@
 MAJOR 2
 MINOR 13
 PATCH 0
-PRERELEASE 52
+PRERELEASE 53
 PRERELEASE_PATCH 0
\ No newline at end of file