diff --git a/Build.md b/Build.md
index 2c116b9..0f43383 100644
--- a/Build.md
+++ b/Build.md
@@ -42,6 +42,8 @@ cmake -H. -BRelease -DCMAKE_BUILD_TYPE=Release \
 **Ignore** `fatal: No names found, cannot describe anything` message
 Proceed with `cmake --build Release` and, if successful, `cd Release && sudo make install`
 
+**Note** You will need `sudo apt-get install libclang-10-dev` as well for Ubuntu 20.04 build.  
+
 Ubuntu 18.04 prebuilt binaries are actually suitable for many non-Ubuntu distributions.
 You may replace the last two **cmake** commands with: