diff --git a/rational.c b/rational.c
index 8fa69bd114..3e5dea3349 100644
--- a/rational.c
+++ b/rational.c
@@ -744,7 +744,7 @@ f_addsub(VALUE self, VALUE anum, VALUE aden, VALUE bnum, VALUE bden, int k)
  * Performs addition.
  *
  *    Rational(2, 3)  + Rational(2, 3)   #=> (4/3)
- *    Rational(900)   + Rational(1)      #=> (900/1)
+ *    Rational(900)   + Rational(1)      #=> (901/1)
  *    Rational(-2, 9) + Rational(-9, 2)  #=> (-85/18)
  *    Rational(9, 8)  + 4                #=> (41/8)
  *    Rational(20, 9) + 9.8              #=> 12.022222222222222
diff --git a/version.h b/version.h
index 7aa76b0f4e..a7867a858b 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.2.7"
 #define RUBY_RELEASE_DATE "2017-03-26"
-#define RUBY_PATCHLEVEL 442
+#define RUBY_PATCHLEVEL 443
 
 #define RUBY_RELEASE_YEAR 2017
 #define RUBY_RELEASE_MONTH 3