diff --git a/os/nil/include/ch.h b/os/nil/include/ch.h
index d46664bc3..592c4d89e 100644
--- a/os/nil/include/ch.h
+++ b/os/nil/include/ch.h
@@ -55,7 +55,7 @@
 /**
  * @brief   Kernel version string.
  */
-#define CH_KERNEL_VERSION       "3.1.1"
+#define CH_KERNEL_VERSION       "3.1.0"
 
 /**
  * @brief   Kernel version major number.
@@ -70,7 +70,7 @@
 /**
  * @brief   Kernel version patch number.
  */
-#define CH_KERNEL_PATCH         1
+#define CH_KERNEL_PATCH         0
 /** @} */
 
 /**