diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -65,8 +65,9 @@
 
         * ``-DLLVM_ENABLE_PROJECTS='...'`` --- semicolon-separated list of the LLVM
           sub-projects you'd like to additionally build. Can include any of: clang,
-          clang-tools-extra, libcxx, libcxxabi, libunwind, lldb, compiler-rt, lld,
-          polly, or cross-project-tests.
+          clang-tools-extra, compiler-rt,cross-project-tests, flang, libc, libclc,
+          libcxx, libcxxabi, libunwind, lld, lldb, mlir, openmp, parallel-libs,
+          polly, or pstl.
 
           For example, to build LLVM, Clang, libcxx, and libcxxabi, use
           ``-DLLVM_ENABLE_PROJECTS="clang;libcxx;libcxxabi"``.
diff --git a/llvm/docs/GettingStarted.rst b/llvm/docs/GettingStarted.rst
--- a/llvm/docs/GettingStarted.rst
+++ b/llvm/docs/GettingStarted.rst
@@ -615,8 +615,10 @@
 |                         | other LLVM subprojects to additionally build. (Only|
 |                         | effective when using a side-by-side project layout |
 |                         | e.g. via git). The default list is empty. Can      |
-|                         | include: clang, libcxx, libcxxabi, libunwind, lldb,|
-|                         | compiler-rt, lld, polly, or debuginfo-tests.       |
+|                         | include: clang, clang-tools-extra, compiler-rt,    |
+|                         | cross-project-tests, flang, libc, libclc, libcxx,  |
+|                         | libcxxabi, libunwind, lld, lldb, mlir, openmp,     |
+|                         | parallel-libs, polly, or pstl.                     |
 +-------------------------+----------------------------------------------------+
 | LLVM_ENABLE_SPHINX      | Build sphinx-based documentation from the source   |
 |                         | code. This is disabled by default because it is    |