diff --git a/var/spack/repos/builtin/packages/nccl/package.py b/var/spack/repos/builtin/packages/nccl/package.py
index 4517124f661a63..4441841112635e 100644
--- a/var/spack/repos/builtin/packages/nccl/package.py
+++ b/var/spack/repos/builtin/packages/nccl/package.py
@@ -17,6 +17,7 @@ class Nccl(MakefilePackage, CudaPackage):
     maintainers("adamjstewart")
     libraries = ["libnccl.so"]
 
+    version("2.21.5-1", sha256="1923596984d85e310b5b6c52b2c72a1b93da57218f2bc5a5c7ac3d59297a3303")
     version("2.20.3-1", sha256="19456bd63ca7d23a8319cbbdbaaf6c25949dd51161a9f8809f6b7453282983dd")
     version("2.19.3-1", sha256="1c5474553afedb88e878c772f13d6f90b9226b3f2971dfa6f873adb9443100c2")
     version("2.18.5-1", sha256="16ac98f3e926c024ce48e10ab220e19ce734adc48c423cfd55ad6f509bd1179f")