diff --git a/parse.y b/parse.y
index 70c4ddfcdc..ca55b96ecd 100644
--- a/parse.y
+++ b/parse.y
@@ -13324,7 +13324,6 @@ count_char(const char *str, int c)
 RUBY_FUNC_EXPORTED size_t
 rb_yytnamerr(struct parser_params *p, char *yyres, const char *yystr)
 {
-    YYUSE(p);
     if (*yystr == '"') {
 	size_t yyn = 0, bquote = 0;
 	const char *yyp = yystr;
diff --git a/version.h b/version.h
index 198b65e80a..6b0931ab26 100644
--- a/version.h
+++ b/version.h
@@ -12,7 +12,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 30
+#define RUBY_PATCHLEVEL 31
 
 #define RUBY_RELEASE_YEAR 2021
 #define RUBY_RELEASE_MONTH 2