diff --git a/.ci/setup.sh b/.ci/setup.sh
index e038be53417f..f389b28e190d 100755
--- a/.ci/setup.sh
+++ b/.ci/setup.sh
@@ -98,15 +98,9 @@ else  # Linux
                 clang \
                 libomp-dev
         fi
-        curl \
-            -s \
-            -L \
-            --insecure \
-            https://apt.kitware.com/keys/kitware-archive-latest.asc \
-        | apt-key add -
+        curl -sL https://apt.kitware.com/keys/kitware-archive-latest.asc | apt-key add -
         apt-add-repository "deb https://apt.kitware.com/ubuntu/ $(lsb_release -cs) main" -y
-        apt-get --allow-unauthenticated upgrade -y
-        apt-get --allow-unauthenticated update -y
+        apt-get update
         apt-get install --no-install-recommends -y \
             cmake
     else
diff --git a/.github/workflows/cuda.yml b/.github/workflows/cuda.yml
index 49b9d7bc169c..2100e171ee7b 100644
--- a/.github/workflows/cuda.yml
+++ b/.github/workflows/cuda.yml
@@ -26,7 +26,7 @@ jobs:
           - method: source
             compiler: gcc
             python_version: 3.7
-            cuda_version: "11.5.0"
+            cuda_version: "11.5.1"
           - method: pip
             compiler: clang
             python_version: 3.8