diff --git a/TODO.md b/TODO.md
index 34727a2..f023bd0 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,5 +1,9 @@
 ## TODO
 
+* reduce lib size, librubberband is 1.3 M (one .so file)
+    - maybe we are compiling too many source files
+    - # TODO: see Android.mk in librubberband and copy options from `LOCAL_CFLAGS`
+
 O> 16 KB paging for NDK libs
 * target SDK level 35
 
diff --git a/app/src/main/cpp/librubberband b/app/src/main/cpp/librubberband
index 3a3acae..ae0d815 160000
--- a/app/src/main/cpp/librubberband
+++ b/app/src/main/cpp/librubberband
@@ -1 +1 @@
-Subproject commit 3a3acae7775b87f80066db84ae9a80279c09783a
+Subproject commit ae0d81599df378b94fdf1dc28696da8f57f9fa1c