diff --git a/submod.sh b/submod.sh
index 02a9e36..0f7a869 100755
--- a/submod.sh
+++ b/submod.sh
@@ -6,13 +6,13 @@ git submodule update --init --recursive
 #
 # Use fixed master branch of circle-stdlib then re-update
 cd circle-stdlib/
-git checkout 695ab4a
+git checkout 3bd135d
 git submodule update --init --recursive
 cd -
 #
 # Optional update submodules explicitly
 cd circle-stdlib/libs/circle
-git checkout 59484ba
+git checkout 3bd135d
 cd -
 cd circle-stdlib/libs/circle-newlib
 #git checkout develop