diff --git a/.travis.yml b/.travis.yml
index 0daf1226..4b1a99d4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,7 @@ install:
   - export PATH=$PWD/tools/toolchains/esp8266/bin:$PWD/tools/toolchains/esp32/bin:$PATH
 script:
 - export BUILD_DATE=$(date +%Y%m%d)
-- env BUILD_DIR_BASE=build/float make MORE_CFLAGS="-DBUILD_DATE='\"'$BUILD_DATE'\"'" defconfig all
-- env BUILD_DIR_BASE=build/integer make MORE_CFLAGS="-DLUA_NUMBER_INTEGRAL -DBUILD_DATE='\"'$BUILD_DATE'\"'" defconfig all
+- env BUILD_DIR_BASE=build/float make BATCH_BUILD=1 MORE_CFLAGS="-DBUILD_DATE='\"'$BUILD_DATE'\"'" defconfig all
+- env BUILD_DIR_BASE=build/integer make BATCH_BUILD=1 MORE_CFLAGS="-DLUA_NUMBER_INTEGRAL -DBUILD_DATE='\"'$BUILD_DATE'\"'" defconfig all
 # http://docs.travis-ci.com/user/environment-variables/#Convenience-Variables
 #- if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then bash "$TRAVIS_BUILD_DIR"/tools/pr-build.sh; fi
diff --git a/sdk/esp32-esp-idf b/sdk/esp32-esp-idf
index 8615dbd4..ecbe5a66 160000
--- a/sdk/esp32-esp-idf
+++ b/sdk/esp32-esp-idf
@@ -1 +1 @@
-Subproject commit 8615dbd486ef123876662a5664b3527a24daa92e
+Subproject commit ecbe5a66f2478879ea3ca4bd6d7cab92065604a9
diff --git a/tools/toolchains b/tools/toolchains
index 2cb45e9e..92842d3c 160000
--- a/tools/toolchains
+++ b/tools/toolchains
@@ -1 +1 @@
-Subproject commit 2cb45e9ea7c18d78d4c312b2a7d6e0719e743593
+Subproject commit 92842d3c5a3af36be66039e73d25286aa1d57929