diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 63c650945c8..c910a0c4eda 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -503,7 +503,6 @@ Ubuntu_GCC_integration_tests_asan:
     - ccache/
   script:
     - CI/before_install.osx.sh
-    - brew install awscli@2.22.35
     - export CCACHE_BASEDIR="$(pwd)"
     - export CCACHE_DIR="$(pwd)/ccache"
     - mkdir -pv "${CCACHE_DIR}"
@@ -511,12 +510,18 @@ Ubuntu_GCC_integration_tests_asan:
     - CI/before_script.osx.sh
     - cd build; make -j $(sysctl -n hw.logicalcpu) package
     - for dmg in *.dmg; do mv "$dmg" "${dmg%.dmg}_${CI_COMMIT_REF_NAME##*/}.dmg"; done
-    - aws --version
     - |
       if [[ -n "${AWS_ACCESS_KEY_ID}" ]]; then
+        echo "[default]" > ~/.s3cfg
+        echo "access_key = ${AWS_ACCESS_KEY_ID}" >> ~/.s3cfg
+        echo "secret_key = ${AWS_SECRET_ACCESS_KEY}" >> ~/.s3cfg
+        echo "host_base = rgw.ctrl-c.liu.se" >> ~/.s3cfg
+        echo "host_bucket = %(bucket)s.rgw.ctrl-c.liu.se" >> ~/.s3cfg
+        echo "use_https = True" >> ~/.s3cfg
+
         artifactDirectory="${CI_PROJECT_NAMESPACE//[\"<>|$'\t'\/\\?*]/_}/${CI_COMMIT_REF_NAME//[\"<>|$'\t'\/\\?*]/_}/${CI_COMMIT_SHORT_SHA//[\"<>|$'\t'\/\\?*]/_}-${CI_JOB_ID//[\"<>|$'\t'\/\\?*]/_}/"
         for dmg in *.dmg; do
-          aws --endpoint-url https://rgw.ctrl-c.liu.se s3 cp "${dmg}" s3://openmw-artifacts/${artifactDirectory}
+          s3cmd put "${dmg}" s3://openmw-artifacts/${artifactDirectory}
         done
       fi
     - ccache -s
diff --git a/CI/before_install.osx.sh b/CI/before_install.osx.sh
index 0120c552027..d73399c1027 100755
--- a/CI/before_install.osx.sh
+++ b/CI/before_install.osx.sh
@@ -7,7 +7,7 @@ export HOMEBREW_AUTOREMOVE=1
 brew tap --repair
 brew update --quiet
 
-brew install curl xquartz gd fontconfig freetype harfbuzz brotli
+brew install curl xquartz gd fontconfig freetype harfbuzz brotli s3cmd
 
 command -v ccache >/dev/null 2>&1 || brew install ccache
 command -v cmake >/dev/null 2>&1 || brew install cmake