diff --git a/Makefile b/Makefile
index 354a491ae7f..6ca28d8355c 100644
--- a/Makefile
+++ b/Makefile
@@ -42,7 +42,7 @@ contracts-env-img:
 
 .PHONY: tags
 tags:
-	ctags -R --exclude=plugins/telemetry_plugin/lib/prometheus-cpp/3rdparty .
+	ctags -R --exclude=plugins/telemetry_plugin/lib/prometheus-cpp/3rdparty --exclude=build .
 
 .PHONY: clean
 clean:
diff --git a/docs/upgrade-1.x-to-2.0.md b/docs/upgrade-1.x-to-2.0.md
new file mode 100644
index 00000000000..4b9d6f1d845
--- /dev/null
+++ b/docs/upgrade-1.x-to-2.0.md
@@ -0,0 +1,71 @@
+# Guide to upgrade daobet node from 1.x to 2.0
+
+Please, read this guide carefully before performing any actions.
+
+Here, `data_dir` variable is a path to you `data` directory (contains `blocks`, `state`, and other files and
+directories).
+
+* Stop running node (binary or container):
+  ```
+  kill daobet-node
+  # OR
+  docker stop daobet-producer
+  ```
+
+* Backup `blocks/reversible`, `state-history` and `state` directories located in node data directory:
+  ```
+  ( cd "$data_dir" && rsync -avR --delete blocks/reversible state-history state ~/backup.daobet-1.x )
+  ```
+
+* If you used default values for `data-dir` and/or `config-dir`, you may need to rename `nodeos` directory to the
+  `daobet-node`.
+
+* Delete the following directories within the node data directory: `blocks/reversible`, `state-history`, and `state` (be
+  sure they were backed up earlier):
+  ```
+  rm -rf /path/to/daobet-node/data/{blocks/reversible,state-history,state}/
+  ```
+
+* Create file `protocol_features/BUILTIN-PREACTIVATE_FEATURE.json` in your config directory with the following contents:
+  ```
+  {
+    "protocol_feature_type": "builtin",
+    "dependencies": [],
+    "description_digest": "64fe7df32e9b86be2b296b3f81dfd527f84e82b98e363bc97e40bc7a83733310",
+    "subjective_restrictions": {
+      "earliest_allowed_activation_time": "1970-01-01T00:00:00.000",
+      "preactivation_required": false,
+      "enabled": true
+    },
+    "builtin_feature_codename": "PREACTIVATE_FEATURE"
+  }
+  ```
+
+  In the above JSON-file, `earliest_allowed_activation_time` is set to the earliest time that block producers agreed to
+  activate the first protocol feature.
+
+  It is important that this configuration change happens prior to allowing that node to produce blocks on the network.
+  As long as more than two-thirds of the active block producers have set the same future time in the configuration file
+  for the `PREACTIVATE_FEATURE` on their BP nodes, the network will be safe from any attempts at premature activation by
+  some other active BPs.
+
+  After the agreed upon time has passed, any of the active block producers can activate the `PREACTIVATE_FEATURE`
+  protocol feature with a simple request sent to the `producer_api_plugin` of their BP node:
+  ```
+  curl -X POST http://127.0.0.1:8888/v1/producer/schedule_protocol_feature_activations \
+    -d '{"protocol_features_to_activate": ["0ec7e080177b2c02b278d5088611686b49d739925a92d9bfcacd7fc6b74053bd"]}'
+  ```
+
+  (See https://developers.eos.io/manuals/eos/latest/nodeos/upgrade-guides/1.8-upgrade-guide for detals.)
+
+* Update the daobet software installation either by your system package manager, or by pulling a docker image:
+  ```
+  dpkg -i daobet_2.0.0-1_amd64.deb
+  # OR
+  docker pull daocasino/daobet:v2.0.0-rc2
+  ```
+
+* Don't forget to enable block production either by setting `pause-on-startup` config option to `false` (before node
+  run), or by performing a HTTP GET-request to http://localhost:8888/v1/producer/resume (after node run).
+
+* Run node (verson 2.0.0).