diff --git a/docs/Doxyfile b/docs/Doxyfile
index d3fcde64e..a36862b53 100644
--- a/docs/Doxyfile
+++ b/docs/Doxyfile
@@ -31,7 +31,7 @@ PROJECT_NAME           = ChibiOS/RT
 # This could be handy for archiving the generated documentation or 
 # if some version control system is used.
 
-PROJECT_NUMBER         = 1.5.9
+PROJECT_NUMBER         = 2.1.0
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
 # base path where the generated documentation will be put. 
diff --git a/os/kernel/include/ch.h b/os/kernel/include/ch.h
index 42d34fe10..31131ecff 100644
--- a/os/kernel/include/ch.h
+++ b/os/kernel/include/ch.h
@@ -39,22 +39,22 @@
 /**
  * @brief   Kernel version string.
  */
-#define CH_KERNEL_VERSION       "1.5.9unstable"
+#define CH_KERNEL_VERSION       "2.1.0unstable"
 
 /**
  * @brief   Kernel version major number.
  */
-#define CH_KERNEL_MAJOR         1
+#define CH_KERNEL_MAJOR         2
 
 /**
  * @brief   Kernel version minor number.
  */
-#define CH_KERNEL_MINOR         5
+#define CH_KERNEL_MINOR         1
 
 /**
  * @brief   Kernel version patch number.
  */
-#define CH_KERNEL_PATCH         9
+#define CH_KERNEL_PATCH         0
 
 /*
  * Common values.
diff --git a/readme.txt b/readme.txt
index 9f48123cb..ab7e2f881 100644
--- a/readme.txt
+++ b/readme.txt
@@ -58,6 +58,9 @@
 *** Releases                                                              ***
 *****************************************************************************
 
+*** 2.1.0 ***
+- FIX: Fixed assertion in adcStop() (bug 3015109)(backported in 2.0.0).
+
 *** 1.5.9 ***
 - FIX: Fixed STM8 baud rate setup error (bug 3010990).
 - FIX: Fixed STM8 UART3 driver (bug 3009145).