diff --git a/Libraries/ucx/files/variants.merlin6 b/Libraries/ucx/files/variants.merlin6
index 076da2e..0d86ff3 100644
--- a/Libraries/ucx/files/variants.merlin6
+++ b/Libraries/ucx/files/variants.merlin6
@@ -1,4 +1,4 @@
 ucx/1.9.0_slurm           unstable     cuda/11.1.0 b:doxygen/1.8.14 b:knem/1.1.4
-ucx/1.10.0_slurm          unstable     cuda/11.2.2 b:doxygen/1.8.14 b:knem/1.1.4 b:GDRCopy/2.2.0
+ucx/1.10.0_slurm          unstable     cuda/11.3.0 b:doxygen/1.8.14 b:knem/1.1.4 b:GDRCopy/2.2.0
 ucx/1.10.0-1_dgx          unstable     cuda/11.2.2 b:doxygen/1.8.14 b:knem/1.1.4 b:GDRCopy/2.2.0
 ucx/1.10.0-1_slurm        unstable     cuda/11.2.2 b:doxygen/1.8.14 b:knem/1.1.4 b:GDRCopy/2.2.0