diff --git a/Tethering/common/TetheringLib/cronet_enabled/api/current.txt b/Tethering/common/TetheringLib/cronet_enabled/api/current.txt
index feccc74..7bdc0e4 100644
--- a/Tethering/common/TetheringLib/cronet_enabled/api/current.txt
+++ b/Tethering/common/TetheringLib/cronet_enabled/api/current.txt
@@ -6,20 +6,20 @@
     method public abstract void cancel();
     method public abstract void flush();
     method public abstract boolean isDone();
-    method public abstract void read(java.nio.ByteBuffer);
+    method public abstract void read(@NonNull java.nio.ByteBuffer);
     method public abstract void start();
-    method public abstract void write(java.nio.ByteBuffer, boolean);
+    method public abstract void write(@NonNull java.nio.ByteBuffer, boolean);
   }
 
   public abstract static class BidirectionalStream.Builder {
     ctor public BidirectionalStream.Builder();
-    method public abstract android.net.http.BidirectionalStream.Builder addHeader(String, String);
-    method public abstract android.net.http.BidirectionalStream build();
-    method public abstract android.net.http.BidirectionalStream.Builder delayRequestHeadersUntilFirstFlush(boolean);
-    method public abstract android.net.http.BidirectionalStream.Builder setHttpMethod(String);
-    method public abstract android.net.http.BidirectionalStream.Builder setPriority(int);
-    method public abstract android.net.http.BidirectionalStream.Builder setTrafficStatsTag(int);
-    method public abstract android.net.http.BidirectionalStream.Builder setTrafficStatsUid(int);
+    method @NonNull public abstract android.net.http.BidirectionalStream.Builder addHeader(@NonNull String, @NonNull String);
+    method @NonNull public abstract android.net.http.BidirectionalStream build();
+    method @NonNull public abstract android.net.http.BidirectionalStream.Builder delayRequestHeadersUntilFirstFlush(boolean);
+    method @NonNull public abstract android.net.http.BidirectionalStream.Builder setHttpMethod(@NonNull String);
+    method @NonNull public abstract android.net.http.BidirectionalStream.Builder setPriority(int);
+    method @NonNull public abstract android.net.http.BidirectionalStream.Builder setTrafficStatsTag(int);
+    method @NonNull public abstract android.net.http.BidirectionalStream.Builder setTrafficStatsUid(int);
     field public static final int STREAM_PRIORITY_HIGHEST = 4; // 0x4
     field public static final int STREAM_PRIORITY_IDLE = 0; // 0x0
     field public static final int STREAM_PRIORITY_LOW = 2; // 0x2
@@ -29,14 +29,14 @@
 
   public abstract static class BidirectionalStream.Callback {
     ctor public BidirectionalStream.Callback();
-    method public void onCanceled(android.net.http.BidirectionalStream, android.net.http.UrlResponseInfo);
-    method public abstract void onFailed(android.net.http.BidirectionalStream, android.net.http.UrlResponseInfo, android.net.http.HttpException);
-    method public abstract void onReadCompleted(android.net.http.BidirectionalStream, android.net.http.UrlResponseInfo, java.nio.ByteBuffer, boolean);
-    method public abstract void onResponseHeadersReceived(android.net.http.BidirectionalStream, android.net.http.UrlResponseInfo);
-    method public void onResponseTrailersReceived(android.net.http.BidirectionalStream, android.net.http.UrlResponseInfo, android.net.http.UrlResponseInfo.HeaderBlock);
-    method public abstract void onStreamReady(android.net.http.BidirectionalStream);
-    method public abstract void onSucceeded(android.net.http.BidirectionalStream, android.net.http.UrlResponseInfo);
-    method public abstract void onWriteCompleted(android.net.http.BidirectionalStream, android.net.http.UrlResponseInfo, java.nio.ByteBuffer, boolean);
+    method public void onCanceled(@NonNull android.net.http.BidirectionalStream, @Nullable android.net.http.UrlResponseInfo);
+    method public abstract void onFailed(@NonNull android.net.http.BidirectionalStream, @Nullable android.net.http.UrlResponseInfo, @NonNull android.net.http.HttpException);
+    method public abstract void onReadCompleted(@NonNull android.net.http.BidirectionalStream, @NonNull android.net.http.UrlResponseInfo, @NonNull java.nio.ByteBuffer, boolean);
+    method public abstract void onResponseHeadersReceived(@NonNull android.net.http.BidirectionalStream, @NonNull android.net.http.UrlResponseInfo);
+    method public void onResponseTrailersReceived(@NonNull android.net.http.BidirectionalStream, @NonNull android.net.http.UrlResponseInfo, @NonNull android.net.http.UrlResponseInfo.HeaderBlock);
+    method public abstract void onStreamReady(@NonNull android.net.http.BidirectionalStream);
+    method public abstract void onSucceeded(@NonNull android.net.http.BidirectionalStream, @NonNull android.net.http.UrlResponseInfo);
+    method public abstract void onWriteCompleted(@NonNull android.net.http.BidirectionalStream, @NonNull android.net.http.UrlResponseInfo, @NonNull java.nio.ByteBuffer, boolean);
   }
 
   public abstract class CallbackException extends android.net.http.HttpException {
@@ -166,7 +166,7 @@
     method @NonNull public android.net.http.QuicOptions.Builder addAllowedQuicHost(@NonNull String);
     method @NonNull public android.net.http.QuicOptions build();
     method @NonNull public android.net.http.QuicOptions.Builder setHandshakeUserAgent(@NonNull String);
-    method public android.net.http.QuicOptions.Builder setIdleConnectionTimeout(java.time.Duration);
+    method @NonNull public android.net.http.QuicOptions.Builder setIdleConnectionTimeout(@NonNull java.time.Duration);
     method @NonNull public android.net.http.QuicOptions.Builder setInMemoryServerConfigsCacheSize(int);
   }
 
@@ -203,8 +203,8 @@
     method @NonNull public abstract android.net.http.UrlRequest.Builder setDisableCache(boolean);
     method @NonNull public abstract android.net.http.UrlRequest.Builder setHttpMethod(@NonNull String);
     method @NonNull public abstract android.net.http.UrlRequest.Builder setPriority(int);
-    method public abstract android.net.http.UrlRequest.Builder setTrafficStatsTag(int);
-    method public abstract android.net.http.UrlRequest.Builder setTrafficStatsUid(int);
+    method @NonNull public abstract android.net.http.UrlRequest.Builder setTrafficStatsTag(int);
+    method @NonNull public abstract android.net.http.UrlRequest.Builder setTrafficStatsUid(int);
     method @NonNull public abstract android.net.http.UrlRequest.Builder setUploadDataProvider(@NonNull android.net.http.UploadDataProvider, @NonNull java.util.concurrent.Executor);
     field public static final int REQUEST_PRIORITY_HIGHEST = 4; // 0x4
     field public static final int REQUEST_PRIORITY_IDLE = 0; // 0x0
@@ -260,8 +260,8 @@
 
   public abstract static class UrlResponseInfo.HeaderBlock {
     ctor public UrlResponseInfo.HeaderBlock();
-    method public abstract java.util.List<java.util.Map.Entry<java.lang.String,java.lang.String>> getAsList();
-    method public abstract java.util.Map<java.lang.String,java.util.List<java.lang.String>> getAsMap();
+    method @NonNull public abstract java.util.List<java.util.Map.Entry<java.lang.String,java.lang.String>> getAsList();
+    method @NonNull public abstract java.util.Map<java.lang.String,java.util.List<java.lang.String>> getAsMap();
   }
 
 }