doc

README.md

@@ -8,6 +8,15 @@ This library is part of [babashka](https://github.com/borkdude/babashka/)
 but can also be used with JVM Clojure. Check `CHANGES.md` before
 upgrading as the API may still undergo some changes. Contributions welcome.
 
+## Windows
+
+If you are seeing `The system cannot find the path specified` when executing a
+request with `babashka.curl` in Windows, try creating the directory
+`C:\Temp`. The reason for this is that `babashka.curl` parses headers via a
+temporary file produced by `curl`. In GraalVM 19.3.1 on Windows, the temporary
+directory is hard-coded to `C:\Temp`. This will be fixed in a future version of
+GraalVM.
+
 ## Usage
 
 ``` clojure