diff --git a/.github/workflows/ubuntu-20.yml b/.github/workflows/ubuntu-20.yml
index d185837..f40909e 100644
--- a/.github/workflows/ubuntu-20.yml
+++ b/.github/workflows/ubuntu-20.yml
@@ -48,7 +48,7 @@ jobs:
       base-tag: 12.0.1-cudnn8-devel-ubuntu20.04
       cuda-version-minor: "12.0.1"
       cuda-version-major: "12.0"
-      nccl-version: 2.18.3-1
+      nccl-version: 2.18.6-1
       cuda-samples-version: "12.0"
       hpcx-version: "2.16"
       hpcx-nccl-version: "2.18"
@@ -64,7 +64,7 @@ jobs:
       base-tag: 12.1.1-cudnn8-devel-ubuntu20.04
       cuda-version-minor: "12.1.1"
       cuda-version-major: "12.1"
-      nccl-version: 2.18.3-1
+      nccl-version: 2.18.6-1
       cuda-samples-version: "12.1"
       hpcx-version: "2.16"
       hpcx-nccl-version: "2.18"
@@ -80,7 +80,7 @@ jobs:
       base-tag: 12.2.2-cudnn8-devel-ubuntu20.04
       cuda-version-minor: "12.2.2"
       cuda-version-major: "12.2"
-      nccl-version: 2.18.3-1
+      nccl-version: 2.18.6-1
       cuda-samples-version: "12.2"
       hpcx-version: "2.16"
       hpcx-nccl-version: "2.18"