diff --git a/appveyor.yml b/appveyor.yml
index 19dc5ec..07e9af7 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -50,13 +50,25 @@ artifacts:
 
 # on successful build
 on_success:
-  - sh: echo on_success
+  - sh: |
+      CURR_VER=$(npm view package.json version)
+      if curl -s -X GET -H "token: $deploytoken" https://git.nfp.is/api/v1/repos/$APPVEYOR_REPO_NAME/releases | grep -o "\"name\"\:\"v${CURR_VER}\"" > /dev/null; then
+        echo "Release already exists, nothing to do.";
+      else
+        ./test/7zas a -mx9 "${CURR_VER}_sc-core.7z" package.json index.mjs cli.mjs core bin
+        npm publish
+      fi
+  - sh: |
+      YELLOW='\033[0;33m'
+      NC='\033[0m'
+      LOCK_FILE="${HOME}/build.lock"
+      export APPVEYOR_SSH_BLOCK=true
+      touch "${LOCK_FILE}"
+      echo -e "Build paused. To resume it, open a bash session to run '${YELLOW}rm \"${LOCK_FILE}\"${NC}' command."
+      while [ -f "${LOCK_FILE}" ]; do
+        sleep 1
+      done
 
 # on build failure
 on_failure:
   - sh: echo on_failure
-
-on_finish:
-  - sh: echo on_finish
-  - sh: export APPVEYOR_SSH_BLOCK=true
-  - sh: curl -sflL 'https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-ssh.sh' | bash -e -