Index: README.txt
==================================================================
--- README.txt
+++ README.txt
@@ -16,10 +16,12 @@
 For best security and function, always compile from source with the latest
 official release of OpenSSL (http://www.openssl.org/).
 
 TLS 1.7 and newer require Tcl 8.4.0+, older versions may be used if older
 versions of Tcl need to be used.
+
+TclTLS requires OpenSSL or LibreSSL in order to be compiled and function.
 
 Non-exclusive credits for TLS are:
    Original work: Matt Newman @ Novadigm
    Updates: Jeff Hobbs @ ActiveState
    Tcl Channel mechanism: Andreas Kupries