diff --git a/version.h b/version.h
index 84a5b160e9..e48d1708a0 100644
--- a/version.h
+++ b/version.h
@@ -2,7 +2,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 3
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 154
+#define RUBY_PATCHLEVEL 155
 
 #define RUBY_RELEASE_YEAR 2021
 #define RUBY_RELEASE_MONTH 2
diff --git a/vm_method.c b/vm_method.c
index 4504468789..779ef460a4 100644
--- a/vm_method.c
+++ b/vm_method.c
@@ -1774,7 +1774,7 @@ rb_mod_private(int argc, VALUE *argv, VALUE module)
 
 /*
  *  call-seq:
- *     ruby2_keywords(method_name, ...)    -> self
+ *     ruby2_keywords(method_name, ...)    -> nil
  *
  *  For the given method names, marks the method as passing keywords through
  *  a normal argument splat.  This should only be called on methods that