diff --git a/build-flang.sh b/build-flang.sh
index 5d16d17..851a92e 100644
--- a/build-flang.sh
+++ b/build-flang.sh
@@ -4,7 +4,7 @@ set -e -o pipefail -u
 
 : ${BUILD_ARCH_OR_TYPE:=host}
 : ${DEFAULT_ANDROID_API_LEVEL:=21}
-: ${ANDROID_NDK:=~/lib/android-ndk-r27b}
+: ${ANDROID_NDK:=~/lib/android-ndk-r27c}
 : ${FLANG_MAKE_PROCESSES:=1}
 
 patch -p1 -d $(pwd)/out/llvm-project < flang-undef-macros.patch
diff --git a/build.sh b/build.sh
index ad44896..99b20ac 100644
--- a/build.sh
+++ b/build.sh
@@ -13,7 +13,7 @@ git config --global color.ui false
 mkdir -p llvm-toolchain && cd llvm-toolchain
 repo init -u https://android.googlesource.com/platform/manifest
 # Modified the manifest xml, to ensure only contain linux component
-sed -E 's/(^.*?(darwin|mingw|windows).*$)/<!-- \1 -->/g' ../manifest_12285214.xml > .repo/manifests/test.xml
+sed -E 's/(^.*?(darwin|mingw|windows).*$)/<!-- \1 -->/g' ../manifest_12470979.xml > .repo/manifests/test.xml
 repo init -m test.xml
 repo sync -c
 
diff --git a/manifest_12285214.xml b/manifest_12470979.xml
similarity index 98%
rename from manifest_12285214.xml
rename to manifest_12470979.xml
index 39a4bd3..90c8fe3 100644
--- a/manifest_12285214.xml
+++ b/manifest_12470979.xml
@@ -15,7 +15,7 @@
 
   <project path="toolchain/llvm-project" name="toolchain/llvm-project" revision="d8003a456d14a3deb8054cdaa529ffbf02d9b262" />
 
-  <project path="toolchain/llvm_android" name="toolchain/llvm_android" revision="2a4ee244d6dd0dcb8365590b898f7a40ec3cb87a" />
+  <project path="toolchain/llvm_android" name="toolchain/llvm_android" revision="31a1d3747b77b10185c0adf03ae6036b474719c7" />
 
   <project path="toolchain/common" name="toolchain/common" revision="0bce8b062126242872e9f3fc66760d3f76773c49" />