diff --git a/deps/v8/include/v8-version.h b/deps/v8/include/v8-version.h
index d3c3a2b76c13ff..f7395e3d6f3c9c 100644
--- a/deps/v8/include/v8-version.h
+++ b/deps/v8/include/v8-version.h
@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 6
 #define V8_MINOR_VERSION 1
 #define V8_BUILD_NUMBER 534
-#define V8_PATCH_LEVEL 47
+#define V8_PATCH_LEVEL 48
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)
diff --git a/deps/v8/test/message/testcfg.py b/deps/v8/test/message/testcfg.py
index 0576458af24a4e..1bbb2b16d83472 100644
--- a/deps/v8/test/message/testcfg.py
+++ b/deps/v8/test/message/testcfg.py
@@ -107,7 +107,7 @@ def IsFailureOutput(self, testcase):
         expected_lines, actual_lines, fillvalue=''):
       pattern = re.escape(expected.rstrip() % env)
       pattern = pattern.replace("\\*", ".*")
-      pattern = pattern.replace("\\{NUMBER\\}", "\d(?:\.\d*)?")
+      pattern = pattern.replace("\\{NUMBER\\}", "\d+(?:\.\d*)?")
       pattern = "^%s$" % pattern
       if not re.match(pattern, actual):
         return True