diff --git a/doc/hal/Doxyfile_chm b/doc/hal/Doxyfile_chm
index fed627838..08f5f0521 100644
--- a/doc/hal/Doxyfile_chm
+++ b/doc/hal/Doxyfile_chm
@@ -38,7 +38,7 @@ PROJECT_NAME           = ChibiOS/HAL
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 5.1.0
+PROJECT_NUMBER         = 5.1.1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/doc/hal/Doxyfile_html b/doc/hal/Doxyfile_html
index 163a9caf2..f9cd76f20 100644
--- a/doc/hal/Doxyfile_html
+++ b/doc/hal/Doxyfile_html
@@ -38,7 +38,7 @@ PROJECT_NAME           = ChibiOS/HAL
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 5.1.0
+PROJECT_NUMBER         = 5.1.1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/os/hal/include/hal.h b/os/hal/include/hal.h
index 8ecd235bc..18c6e6103 100644
--- a/os/hal/include/hal.h
+++ b/os/hal/include/hal.h
@@ -181,7 +181,7 @@
 /**
  * @brief   HAL version string.
  */
-#define HAL_VERSION             "5.1.0"
+#define HAL_VERSION             "5.1.1"
 
 /**
  * @brief   HAL version major number.
@@ -196,7 +196,7 @@
 /**
  * @brief   HAL version patch number.
  */
-#define CH_HAL_PATCH            0
+#define CH_HAL_PATCH            1
 /** @} */
 
 /**