diff --git a/.travis.yml b/.travis.yml
index 29d67dc..d19878c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: python
 python:
   - "2.7"
-  - "3.5"
+  - "3.6"
 
 env:
   - PLATFORMIO_PROJECT_DIR=examples/native-blink
diff --git a/appveyor.yml b/appveyor.yml
index fc2ba47..a5bd17c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -8,8 +8,8 @@ environment:
 
 install:
 - cmd: git submodule update --init --recursive
-- cmd: SET PATH=%PATH%;C:\Python27\Scripts
-- cmd: pip install -U https://github.com/platformio/platformio/archive/develop.zip
+- cmd: SET PATH=%PATH%;C:\Python36\Scripts
+- cmd: pip3 install -U https://github.com/platformio/platformio/archive/develop.zip
 - cmd: platformio platform install file://.
 
 test_script:
diff --git a/boards/stc15w404as.json b/boards/stc15w404as.json
index fa463d0..0d3542c 100644
--- a/boards/stc15w404as.json
+++ b/boards/stc15w404as.json
@@ -5,7 +5,7 @@
     "size_xram": 256,
     "size_code": 4096,
     "size_heap": 128,
-    "mcu": "stc15w408as",
+    "mcu": "stc15w404as",
     "cpu": "mcs51"
   },
   "frameworks": [],
@@ -18,7 +18,7 @@
       "stcgal"
     ]
   },
-  "name": "Generic STC15W408AS",
-  "url": "https://www.stcmicro.com/STC/STC15W408AS.html",
+  "name": "Generic STC15W404AS",
+  "url": "https://www.stcmicro.com/STC/STC15W404AS.html",
   "vendor": "STC"
 }
diff --git a/boards/stc89c52rc.json b/boards/stc89c52rc.json
new file mode 100644
index 0000000..ae4629d
--- /dev/null
+++ b/boards/stc89c52rc.json
@@ -0,0 +1,24 @@
+{
+  "build": {
+    "f_cpu": "11059200",
+    "size_iram": 256,
+    "size_xram": 256,
+    "size_code": 8192,
+    "size_heap": 128,
+    "mcu": "stc89c52rc",
+    "cpu": "mcs51"
+  },
+  "frameworks": [],
+  "upload": {
+    "maximum_ram_size": 512,
+    "maximum_size": 8192,
+    "protocol": "stcgal",
+    "stcgal_protocol": "stc89",
+    "protocols": [
+      "stcgal"
+    ]
+  },
+  "name": "Generic STC89C52RC",
+  "url": "https://www.stcmicro.com/STC/STC89C52RC.html",
+  "vendor": "STC"
+}
diff --git a/platform.json b/platform.json
index 5b556da..d3ed19e 100644
--- a/platform.json
+++ b/platform.json
@@ -12,7 +12,7 @@
     "type": "git",
     "url": "https://github.com/platformio/platform-intel_mcs51.git"
   },
-  "version": "1.2.0",
+  "version": "1.2.1",
   "packageRepositories": [
     "https://dl.bintray.com/platformio/dl-packages/manifest.json",
     "http://dl.platformio.org/packages/manifest.json"