diff --git a/docs/HTTP2.md b/docs/HTTP2.md
index 331bcb0aed14a20cfae71e47dd2164d6e328eb9d..6fc3e49c840f10dde0a7a83c1a4ba91549996180 100644
--- a/docs/HTTP2.md
+++ b/docs/HTTP2.md
@@ -7,7 +7,7 @@ HTTP/2 with curl
 Build prerequisites
 -------------------
   - nghttp2
-  - OpenSSL, NSS, GnutTLS, PolarSSL, wolfSSL or SChannel with a new enough
+  - OpenSSL, NSS, GnutTLS, mbedTLS, wolfSSL or SChannel with a new enough
     version.
 
 [nghttp2](https://nghttp2.org/)
@@ -58,7 +58,7 @@ provide the necessary TLS features. Right now we support:
   - OpenSSL:  ALPN and NPN
   - NSS:      ALPN and NPN
   - GnuTLS:   ALPN
-  - PolarSSL: ALPN
+  - mbedTLS:  ALPN
   - SChannel: ALPN
   - wolfSSL:  ALPN