diff --git a/Makefile b/Makefile
index 76d428141..4d26fd1c8 100644
--- a/Makefile
+++ b/Makefile
@@ -182,7 +182,7 @@ LIBCXX_CMAKE_FLAGS = \
     -DLIBCXX_ENABLE_SHARED:BOOL=$(2) \
     -DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY:BOOL=OFF \
     -DLIBCXX_ENABLE_EXCEPTIONS:BOOL=OFF \
-    -DLIBCXX_ENABLE_FILESYSTEM:BOOL=OFF \
+    -DLIBCXX_ENABLE_FILESYSTEM:BOOL=ON \
     -DLIBCXX_ENABLE_ABI_LINKER_SCRIPT:BOOL=OFF \
     -DLIBCXX_CXX_ABI=libcxxabi \
     -DLIBCXX_CXX_ABI_INCLUDE_PATHS=$(LLVM_PROJ_DIR)/libcxxabi/include \
diff --git a/src/wasi-libc b/src/wasi-libc
index 925ad6d75..cc62fa82c 160000
--- a/src/wasi-libc
+++ b/src/wasi-libc
@@ -1 +1 @@
-Subproject commit 925ad6d75899397d26b9f09a6f195dbf5eb35814
+Subproject commit cc62fa82c29bfced82d280cbccc231667ee80822