diff --git a/nix/c-nif.nix b/nix/c-nif.nix
index bf64d982..692bdc38 100644
--- a/nix/c-nif.nix
+++ b/nix/c-nif.nix
@@ -4,6 +4,7 @@
   pkg-config,
   net-snmp,
   erlang,
+  openssl,
 }:
 
 stdenv.mkDerivation {
@@ -24,6 +25,7 @@ stdenv.mkDerivation {
   buildInputs = [
     net-snmp
     erlang
+    openssl
   ];
 
   # Build using the existing Makefile