diff --git a/docs/getting_started/cpp_compiler_support.md b/docs/getting_started/cpp_compiler_support.md
index 913992f6..6784f914 100644
--- a/docs/getting_started/cpp_compiler_support.md
+++ b/docs/getting_started/cpp_compiler_support.md
@@ -13,13 +13,18 @@
 The table below provides the minimum compiler version required to compile the code using a specific
 C++ feature:
 
-| C++ Feature                   | C++ version | gcc  | clang | apple-clang |                   MSVC                    |
-|-------------------------------|:-----------:|:----:|:-----:|:-----------:|:-----------------------------------------:|
-| **Minimum support**           |     20      |  12  |  16   |     15      | 194 :bug:{ title="BEWARE of MSVC Bugs!" } |
-| **`std::format`**             |     20      |  13  |  17   |     16      |                    194                    |
-| **C++ modules**               |     20      | None |  17   |    None     |                   None                    |
-| **`import std;`**             |     23      | None |  18   |    None     |                   None                    |
-| **Explicit `this` parameter** |     23      |  14  |  18   |    None     |                   None                    |
+| C++ Feature                   | C++ version | gcc  |   clang    | apple-clang |                    MSVC                    |
+|-------------------------------|:-----------:|:----:|:----------:|:-----------:|:------------------------------------------:|
+| **Minimum support**           |     20      | 12+  | 16+ && !19 |     15+     | 194+ :bug:{ title="BEWARE of MSVC Bugs!" } |
+| **`std::format`**             |     20      | 13+  |    17+     |     16+     |                    194+                    |
+| **C++ modules**               |     20      | None |    17+     |    None     |                    None                    |
+| **`import std;`**             |     23      | None |    18+     |    None     |                    None                    |
+| **Explicit `this` parameter** |     23      | 14+  |    18+     |    None     |                    None                    |
+
+??? note "clang-19 unfixable bug"
+
+    Unfortunately, clang-19 does not build **mp-units** because of an
+    [unfixable bug in the compiler](https://github.com/llvm/llvm-project/pull/118288).
 
 ??? note "MSVC bugs"