diff --git a/pkgs/development/libraries/librdmacm/default.nix b/pkgs/development/libraries/librdmacm/default.nix
index 498463b2aea..2b8720357a1 100644
--- a/pkgs/development/libraries/librdmacm/default.nix
+++ b/pkgs/development/libraries/librdmacm/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl, libibverbs }:
 
 stdenv.mkDerivation rec {
-  name = "librdmacm-1.0.19.1";
+  name = "librdmacm-1.0.21";
 
   src = fetchurl {
     url = "https://www.openfabrics.org/downloads/rdmacm/${name}.tar.gz";
-    sha256 = "0aq9x2aq62j9qn5yqifp4f2y7w2l35571ns260bwd2c60jf5fjlm";
+    sha256 = "0yx2wr5dvmf5apvc4f4r2f2mlvn05piwvxsqfb60p3rk4jfx56dx";
   };
 
   buildInputs = [ libibverbs ];