diff --git a/README.md b/README.md
index 30b2cad8..f9ec5635 100644
--- a/README.md
+++ b/README.md
@@ -138,6 +138,7 @@ library archives (`.a`).
 | pkg-config     | any           | NO       | `pkg-config`       | `base-devel`   | NO       |                |
 | Boost          | 1.58          | NO       | `libboost-all-dev` | `boost`        | NO       | C++ libraries  |
 | libevent       | 2.0           | NO       | `libevent-dev`     | `libevent`     | NO       | Network IO     |
+| OpenSSL        | basically any | NO       | `libssl-dev`       | `openssl`      | NO       | sha256 sum     |
 | libunbound     | 1.4.16        | YES      | `libunbound-dev`   | `unbound`      | NO       | DNS resolver   |
 | libminiupnpc   | 2.0           | YES      | `libminiupnpc-dev` | `miniupnpc`    | YES      | NAT punching   |
 | libunwind      | any           | NO       | `libunwind8-dev`   | `libunwind`    | YES      | Stack traces   |