diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d175ff6..964b91d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,7 +20,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - updated stm8flash to support more STM8 devices and the ST-Link/V2.1
   adapter found on STM8 Nucleo boards (and espstlink for Linux
   and OSX)
-- updated SDCC to version 3.8.0
+- updated SDCC to version 3.8.1
 - Arduino.h is automatically included now, no need for #include "Arduino.h"
   anymore
 
diff --git a/board-manager/parts/platform-entry-sduino-0.4.0.txt b/board-manager/parts/platform-entry-sduino-0.4.0.txt
new file mode 100644
index 00000000..52d85683
--- /dev/null
+++ b/board-manager/parts/platform-entry-sduino-0.4.0.txt
@@ -0,0 +1,29 @@
+                {
+                    "name": "Sduino STM8 plain C core (non-C++)",
+                    "architecture": "stm8",
+                    "version": "0.4.0",
+                    "category": "Contributed",
+                    "boards": [
+                        {"name": "STM8S103F3 Breakout Board"},
+                        {"name": "STM8S105C6 Discovery Board"},
+                        {"name": "STM8S105K4T6 Breakout Board"},
+                        {"name": "sduino UNO (STM8S105K6)"},
+                        {"name": "sduino MB (STM8S208MBT6B)"}
+                    ],
+                    "toolsDependencies": [
+                        {
+                            "name": "STM8Tools",
+                            "version": "2018.12.07",
+                            "packager": "sduino"
+                        },
+                        {
+                            "name": "sdcc",
+                            "version": "build.10738",
+                            "packager": "sduino"
+                        }
+                    ],
+                    "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-core-0.4.0.tar.bz2",
+                    "archiveFileName": "sduino-core-0.4.0.tar.bz2",
+                    "checksum": "SHA-256:a71dee029991653577c63c9cebe70095b2c08d5b55a9aa0af836f527daf44d8c",
+                    "size": "6110413"
+                },
diff --git a/board-manager/parts/tools-entry-sdcc-10738.txt b/board-manager/parts/tools-entry-sdcc-10738.txt
new file mode 100644
index 00000000..da020ebe
--- /dev/null
+++ b/board-manager/parts/tools-entry-sdcc-10738.txt
@@ -0,0 +1,31 @@
+                {
+                    "name": "sdcc",
+                    "version": "build.10738",
+                    "systems": [
+                        {
+                            "host": "x86_64-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sdcc-stm8-amd64-unknown-linux2.5-20181206-10738.tar.bz2",
+                            "archiveFileName": "sdcc-stm8-amd64-unknown-linux2.5-20181206-10738.tar.bz2",
+                            "checksum": "SHA-256:d5f3d1d1699c6edeb1db6b9a38f0b0c4c28d1ef1cd267dedb9b3f5a65e07a60e",
+                            "size": "2637159"
+                        },{
+                            "host": "i686-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sdcc-stm8-i386-unknown-linux2.5-20181205-10738.tar.bz2",
+                            "archiveFileName": "sdcc-stm8-i386-unknown-linux2.5-20181205-10738.tar.bz2",
+                            "checksum": "SHA-256:d25344d392707773712f71d6c3dd63b4b80ce92e7999664e78a7b186ae4485d6",
+                            "size": "2701297"
+                        },{
+                            "host": "i686-mingw32",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sdcc-stm8-i586-mingw32msvc-20181205-10738.tar.bz2",
+                            "archiveFileName": "sdcc-stm8-i586-mingw32msvc-20181205-10738.tar.bz2",
+                            "checksum": "SHA-256:eecfb34f085f0adc1b9544a5e32168907a88145a469f4733551b79b5ba91ad75",
+                            "size": "3063721"
+                        },{
+                            "host": "x86_64-apple-darwin",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sdcc-stm8-x86_64-apple-macosx-20181205-10738.tar.bz2",
+                            "archiveFileName": "sdcc-stm8-x86_64-apple-macosx-20181205-10738.tar.bz2",
+                            "checksum": "SHA-256:c0ece00b5f20411307b7a5e5bd527c127421e7df5b10946c45ad3305c46732c2",
+                            "size": "2877491"
+                        }
+                    ]
+                },
diff --git a/board-manager/parts/tools-entry-sduino-tools-2018.12.07.txt b/board-manager/parts/tools-entry-sduino-tools-2018.12.07.txt
new file mode 100644
index 00000000..9d056943
--- /dev/null
+++ b/board-manager/parts/tools-entry-sduino-tools-2018.12.07.txt
@@ -0,0 +1,31 @@
+                {
+                    "name": "STM8Tools",
+                    "version": "2018.12.07",
+                    "systems": [
+                        {
+                            "host": "i686-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-tools_linux32-2018.12.07.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux32-2018.12.07.tar.bz2",
+                            "checksum": "SHA-256:3e7b2eded467e29f99024b639dbe7fff444ee5b43e98bae2ba7c9c32d7c15bb8",
+                            "size": "42628"
+                        },{
+                            "host": "x86_64-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-tools_linux64-2018.12.07.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux64-2018.12.07.tar.bz2",
+                            "checksum": "SHA-256:342243c369e7aaa363dcef3048d973a4e90072ffe68a9eeda1f6e679d9cc8b28",
+                            "size": "43223"
+                        },{
+                            "host": "x86_64-apple-darwin",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-tools_macosx-2018.12.07.tar.bz2",
+                            "archiveFileName": "sduino-tools_macosx-2018.12.07.tar.bz2",
+                            "checksum": "SHA-256:2a3680070638e9af8dd5a5af9f52d1643bf29e765b9caa3c996349ccc24f1945",
+                            "size": "45664"
+                        },{
+                            "host": "i686-mingw32",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-tools_mingw32-2018.12.07.tar.bz2",
+                            "archiveFileName": "sduino-tools_mingw32-2018.12.07.tar.bz2",
+                            "checksum": "SHA-256:9d68ff3deb35d840aec8a8f3a92465869990c900e36880cc1298e6fd9d8a7097",
+                            "size": "5485803"
+                        }
+                    ]
+                },
diff --git a/package_sduino_stm8_index.json b/package_sduino_stm8_index.json
index 4917ea58..a126e442 100644
--- a/package_sduino_stm8_index.json
+++ b/package_sduino_stm8_index.json
@@ -9,6 +9,35 @@
                 "online": "http://www.stm32duino.com/viewforum.php?f=52"
             },
             "platforms" : [
+                {
+                    "name": "Sduino STM8 plain C core (non-C++)",
+                    "architecture": "stm8",
+                    "version": "0.4.0",
+                    "category": "Contributed",
+                    "boards": [
+                        {"name": "STM8S103F3 Breakout Board"},
+                        {"name": "STM8S105C6 Discovery Board"},
+                        {"name": "STM8S105K4T6 Breakout Board"},
+                        {"name": "sduino UNO (STM8S105K6)"},
+                        {"name": "sduino MB (STM8S208MBT6B)"}
+                    ],
+                    "toolsDependencies": [
+                        {
+                            "name": "STM8Tools",
+                            "version": "2018.12.07",
+                            "packager": "sduino"
+                        },
+                        {
+                            "name": "sdcc",
+                            "version": "build.10738",
+                            "packager": "sduino"
+                        }
+                    ],
+                    "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-core-0.4.0.tar.bz2",
+                    "archiveFileName": "sduino-core-0.4.0.tar.bz2",
+                    "checksum": "SHA-256:a71dee029991653577c63c9cebe70095b2c08d5b55a9aa0af836f527daf44d8c",
+                    "size": "6110413"
+                },
                 {
                     "name": "Sduino STM8 plain C core (non-C++)",
                     "architecture": "stm8",
@@ -115,6 +144,37 @@
                 }
             ],
             "tools" : [
+                {
+                    "name": "STM8Tools",
+                    "version": "2018.12.07",
+                    "systems": [
+                        {
+                            "host": "i686-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-tools_linux32-2018.12.07.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux32-2018.12.07.tar.bz2",
+                            "checksum": "SHA-256:3e7b2eded467e29f99024b639dbe7fff444ee5b43e98bae2ba7c9c32d7c15bb8",
+                            "size": "42628"
+                        },{
+                            "host": "x86_64-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-tools_linux64-2018.12.07.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux64-2018.12.07.tar.bz2",
+                            "checksum": "SHA-256:342243c369e7aaa363dcef3048d973a4e90072ffe68a9eeda1f6e679d9cc8b28",
+                            "size": "43223"
+                        },{
+                            "host": "x86_64-apple-darwin",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-tools_macosx-2018.12.07.tar.bz2",
+                            "archiveFileName": "sduino-tools_macosx-2018.12.07.tar.bz2",
+                            "checksum": "SHA-256:2a3680070638e9af8dd5a5af9f52d1643bf29e765b9caa3c996349ccc24f1945",
+                            "size": "45664"
+                        },{
+                            "host": "i686-mingw32",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sduino-tools_mingw32-2018.12.07.tar.bz2",
+                            "archiveFileName": "sduino-tools_mingw32-2018.12.07.tar.bz2",
+                            "checksum": "SHA-256:9d68ff3deb35d840aec8a8f3a92465869990c900e36880cc1298e6fd9d8a7097",
+                            "size": "5485803"
+                        }
+                    ]
+                },
                 {
                     "name": "STM8Tools",
                     "version": "2017.11.13",
@@ -196,6 +256,37 @@
                         }
                     ]
                 },
+                {
+                    "name": "sdcc",
+                    "version": "build.10738",
+                    "systems": [
+                        {
+                            "host": "x86_64-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sdcc-stm8-amd64-unknown-linux2.5-20181206-10738.tar.bz2",
+                            "archiveFileName": "sdcc-stm8-amd64-unknown-linux2.5-20181206-10738.tar.bz2",
+                            "checksum": "SHA-256:d5f3d1d1699c6edeb1db6b9a38f0b0c4c28d1ef1cd267dedb9b3f5a65e07a60e",
+                            "size": "2637159"
+                        },{
+                            "host": "i686-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sdcc-stm8-i386-unknown-linux2.5-20181205-10738.tar.bz2",
+                            "archiveFileName": "sdcc-stm8-i386-unknown-linux2.5-20181205-10738.tar.bz2",
+                            "checksum": "SHA-256:d25344d392707773712f71d6c3dd63b4b80ce92e7999664e78a7b186ae4485d6",
+                            "size": "2701297"
+                        },{
+                            "host": "i686-mingw32",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sdcc-stm8-i586-mingw32msvc-20181205-10738.tar.bz2",
+                            "archiveFileName": "sdcc-stm8-i586-mingw32msvc-20181205-10738.tar.bz2",
+                            "checksum": "SHA-256:eecfb34f085f0adc1b9544a5e32168907a88145a469f4733551b79b5ba91ad75",
+                            "size": "3063721"
+                        },{
+                            "host": "x86_64-apple-darwin",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.4.0/sdcc-stm8-x86_64-apple-macosx-20181205-10738.tar.bz2",
+                            "archiveFileName": "sdcc-stm8-x86_64-apple-macosx-20181205-10738.tar.bz2",
+                            "checksum": "SHA-256:c0ece00b5f20411307b7a5e5bd527c127421e7df5b10946c45ad3305c46732c2",
+                            "size": "2877491"
+                        }
+                    ]
+                },
                 {
                     "name": "sdcc",
                     "version": "build.10088",