diff --git a/CHANGELOG.md b/CHANGELOG.md
index bb1c8b81b..154376881 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,14 @@ All notable changes to this project will be documented in this file.  See
 [standard-version](https://github.com/conventional-changelog/standard-version)
 for commit guidelines.
 
+<a name="0.21.1"></a>
+## 0.21.1 (2018-06-25)
+
+### Bug fixes
+
+* [c++] Fix `isSettingUp` function that returned opposite value. (#1297)
+* [tutorial] Update tutorial to use proper PORT literals, mention new pins and nodes. (#1296)
+
 <a name="0.21.0"></a>
 ## 0.21.0 (2018-06-09)
 
diff --git a/lerna.json b/lerna.json
index aba907dfd..ea3d67cd5 100644
--- a/lerna.json
+++ b/lerna.json
@@ -6,5 +6,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "0.21.0"
+  "version": "0.21.1"
 }
diff --git a/packages/xod-arduino/package.json b/packages/xod-arduino/package.json
index 7628e1d52..c39fcde5c 100644
--- a/packages/xod-arduino/package.json
+++ b/packages/xod-arduino/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xod-arduino",
-  "version": "0.21.0",
+  "version": "0.21.1",
   "description": "XOD project: Arduino transpiler",
   "scripts": {
     "build": "babel src/ -d dist/ --source-maps",
diff --git a/packages/xod-cli/package.json b/packages/xod-cli/package.json
index 4453ca2fb..2d4abfad0 100644
--- a/packages/xod-cli/package.json
+++ b/packages/xod-cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xod-cli",
-  "version": "0.21.0",
+  "version": "0.21.1",
   "description": "XOD project: Command Line Interface",
   "scripts": {
     "build:workspace": "cpx \"../../workspace/__lib__/**\" \"./__lib__\"",
@@ -28,10 +28,10 @@
     "sanctuary-def": "^0.14.0",
     "source-map-support": "^0.4.15",
     "swagger-client": "^3.4.3",
-    "xod-arduino": "^0.21.0",
+    "xod-arduino": "^0.21.1",
     "xod-fs": "^0.21.0",
     "xod-func-tools": "^0.21.0",
-    "xod-pm": "^0.21.0",
+    "xod-pm": "^0.21.1",
     "xod-project": "^0.21.0",
     "xod-tabtest": "^0.21.0"
   },
diff --git a/packages/xod-client-browser/package.json b/packages/xod-client-browser/package.json
index ac8b57359..b9a7c496a 100644
--- a/packages/xod-client-browser/package.json
+++ b/packages/xod-client-browser/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xod-client-browser",
-  "version": "0.21.0",
+  "version": "0.21.1",
   "description": "XOD project: Client browser application",
   "scripts": {
     "build:tutorial-project": "node ./tools/loadTutorialProject.js",
@@ -23,8 +23,8 @@
     "redux": "^3.0.5",
     "redux-thunk": "^2.1.0",
     "url-parse": "^1.2.0",
-    "xod-arduino": "^0.21.0",
-    "xod-client": "^0.21.0",
+    "xod-arduino": "^0.21.1",
+    "xod-client": "^0.21.1",
     "xod-func-tools": "^0.21.0",
     "xod-project": "^0.21.0"
   },
diff --git a/packages/xod-client-electron/package.json b/packages/xod-client-electron/package.json
index 4f02870a6..fde36de41 100644
--- a/packages/xod-client-electron/package.json
+++ b/packages/xod-client-electron/package.json
@@ -5,7 +5,7 @@
   "license": "AGPL-3.0",
   "main": "src-babel/app/main.js",
   "name": "xod-client-electron",
-  "version": "0.21.0",
+  "version": "0.21.1",
   "scripts": {
     "build:workspace": "cpx \"../../workspace/**/*\" \"src-babel/workspace\"",
     "build:gui": "webpack --colors",
@@ -41,9 +41,9 @@
     "redux": "^3.0.5",
     "redux-thunk": "^2.1.0",
     "serialport": "^4.0.7",
-    "xod-arduino": "^0.21.0",
+    "xod-arduino": "^0.21.1",
     "xod-arduino-deploy": "^0.21.0",
-    "xod-client": "^0.21.0",
+    "xod-client": "^0.21.1",
     "xod-deploy": "^0.21.0",
     "xod-fs": "^0.21.0",
     "xod-func-tools": "^0.21.0",
diff --git a/packages/xod-client/package.json b/packages/xod-client/package.json
index d7b01fb99..dc8723550 100644
--- a/packages/xod-client/package.json
+++ b/packages/xod-client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xod-client",
-  "version": "0.21.0",
+  "version": "0.21.1",
   "description": "XOD project: Client application",
   "scripts": {
     "build": "babel src/ -d dist/ --source-maps",
@@ -58,10 +58,10 @@
     "url-parse": "^1.1.9",
     "url-search-params-polyfill": "^2.0.1",
     "vec-la-fp": "^1.5.2",
-    "xod-arduino": "^0.21.0",
+    "xod-arduino": "^0.21.1",
     "xod-func-tools": "^0.21.0",
     "xod-patch-search": "^0.21.0",
-    "xod-pm": "^0.21.0",
+    "xod-pm": "^0.21.1",
     "xod-project": "^0.21.0"
   },
   "devDependencies": {
diff --git a/packages/xod-pm/package.json b/packages/xod-pm/package.json
index c6954db32..102f9dbbf 100644
--- a/packages/xod-pm/package.json
+++ b/packages/xod-pm/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xod-pm",
-  "version": "0.21.0",
+  "version": "0.21.1",
   "description": "",
   "main": "dist/index.js",
   "scripts": {
diff --git a/workspace/__lib__/xod/bits/project.xod b/workspace/__lib__/xod/bits/project.xod
index f1db52a08..7b7456a64 100644
--- a/workspace/__lib__/xod/bits/project.xod
+++ b/workspace/__lib__/xod/bits/project.xod
@@ -5,5 +5,5 @@
   "description": "Low-level bits and bytes operations",
   "license": "AGPL-3.0",
   "name": "bits",
-  "version": "0.21.0"
+  "version": "0.21.1"
 }
diff --git a/workspace/__lib__/xod/common-hardware/project.xod b/workspace/__lib__/xod/common-hardware/project.xod
index 2110651e8..1c2cb7b8e 100644
--- a/workspace/__lib__/xod/common-hardware/project.xod
+++ b/workspace/__lib__/xod/common-hardware/project.xod
@@ -5,5 +5,5 @@
   "description": "Hardware drivers for popular and simple peripherals",
   "license": "AGPL-3.0",
   "name": "common-hardware",
-  "version": "0.21.0"
+  "version": "0.21.1"
 }
diff --git a/workspace/__lib__/xod/core/project.xod b/workspace/__lib__/xod/core/project.xod
index 8c750c5f5..dc9bb68c8 100644
--- a/workspace/__lib__/xod/core/project.xod
+++ b/workspace/__lib__/xod/core/project.xod
@@ -5,5 +5,5 @@
   "description": "The very basic nodes of XOD",
   "license": "AGPL-3.0",
   "name": "core",
-  "version": "0.21.0"
+  "version": "0.21.1"
 }
diff --git a/workspace/__lib__/xod/gpio/project.xod b/workspace/__lib__/xod/gpio/project.xod
index 28ab83fde..03c42b0f0 100644
--- a/workspace/__lib__/xod/gpio/project.xod
+++ b/workspace/__lib__/xod/gpio/project.xod
@@ -5,5 +5,5 @@
   "description": "Nodes of XOD to deal with GPIO (hardware pins)",
   "license": "AGPL-3.0",
   "name": "gpio",
-  "version": "0.21.0"
+  "version": "0.21.1"
 }
diff --git a/workspace/__lib__/xod/i2c/project.xod b/workspace/__lib__/xod/i2c/project.xod
index 293e0a4ab..c142671ee 100644
--- a/workspace/__lib__/xod/i2c/project.xod
+++ b/workspace/__lib__/xod/i2c/project.xod
@@ -5,5 +5,5 @@
   "description": "I²C (aka I2C, IIC, TWI) bus interfacing",
   "license": "AGPL-3.0",
   "name": "i2c",
-  "version": "0.21.0"
+  "version": "0.21.1"
 }
diff --git a/workspace/__lib__/xod/math/project.xod b/workspace/__lib__/xod/math/project.xod
index e975087ad..7a1969fcb 100644
--- a/workspace/__lib__/xod/math/project.xod
+++ b/workspace/__lib__/xod/math/project.xod
@@ -5,5 +5,5 @@
   "description": "Nodes of XOD for basic mathematical operations",
   "license": "AGPL-3.0",
   "name": "math",
-  "version": "0.21.0"
+  "version": "0.21.1"
 }
diff --git a/workspace/__lib__/xod/units/project.xod b/workspace/__lib__/xod/units/project.xod
index dcc4bebd3..eaa8e6beb 100644
--- a/workspace/__lib__/xod/units/project.xod
+++ b/workspace/__lib__/xod/units/project.xod
@@ -5,5 +5,5 @@
   "description": "Units of measurement conversions",
   "license": "AGPL-3.0",
   "name": "units",
-  "version": "0.21.0"
+  "version": "0.21.1"
 }