diff --git a/build.sh b/build.sh
index e1696889d..70c77d696 100755
--- a/build.sh
+++ b/build.sh
@@ -182,14 +182,14 @@ cd project && env PATH=$NDKBUILDPATH BUILD_NUM_CPUS=$NCPU nice -n19 ndk-build -j
 				ln -s -f libs lib ; \
 				zip -u -r bin/MainActivity-release-unsigned.apk lib assets || exit 1 ; \
 			} || ant release || exit 1 ; \
-			jarsigner -verbose -keystore ~/.android/debug.keystore -storepass android -sigalg MD5withRSA -digestalg SHA1 bin/MainActivity-release-unsigned.apk androiddebugkey || exit 1 ; \
+			jarsigner -tsa http://timestamp.digicert.com -verbose -keystore ~/.android/debug.keystore -storepass android -sigalg MD5withRSA -digestalg SHA1 bin/MainActivity-release-unsigned.apk androiddebugkey || exit 1 ; \
 			rm -f bin/MainActivity-debug.apk ; \
 			zipalign 4 bin/MainActivity-release-unsigned.apk bin/MainActivity-debug.apk || exit 1 ; \
 		else \
 			$quick_rebuild && { \
 				ln -s -f libs lib ; \
 				zip -u -r bin/MainActivity-debug-unaligned.apk lib assets || exit 1 ; \
-				jarsigner -verbose -keystore ~/.android/debug.keystore -storepass android -sigalg MD5withRSA -digestalg SHA1 bin/MainActivity-debug-unaligned.apk androiddebugkey || exit 1 ; \
+				jarsigner -tsa http://timestamp.digicert.com -verbose -keystore ~/.android/debug.keystore -storepass android -sigalg MD5withRSA -digestalg SHA1 bin/MainActivity-debug-unaligned.apk androiddebugkey || exit 1 ; \
 				rm -f bin/MainActivity-debug.apk ; \
 				zipalign 4 bin/MainActivity-debug-unaligned.apk bin/MainActivity-debug.apk || exit 1 ; \
 			} || ant debug || exit 1 ; \