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+# MSC4330: Specify HTTP and TLS version used for Matrix
+
+Currently there are no HTTP and TLS version mandated by the Matrix spec to be used with the HTTP transport. This
+ambiguity is not good for a standard which should be interoperable with different implementations.
+
+## Proposal
+
+The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and
+"OPTIONAL" in this document are to be interpreted as described in RFC 2119.
+
+All implementations of the Matrix protocol MUST support HTTP/2 and MAY additionally support HTTP/3 for any HTTP based
+transport. Furthermore, all implementations using a transport secured by TLS MUST support TLSv1.2 and SHOULD support any
+newer TLS versions.
+
+## Potential issues
+
+\-
+
+## Alternatives
+
+The mininmum HTTP version could be set to HTTP/1.1 instead.
+
+## Security considerations
+
+See RFC9113 (HTTP/2) section 10 and RFC9114 (HTTP/3) section 10. Additionally, future TLS versions may contain security
+issues which must be addressed.
+