diff --git a/package.json b/package.json
index 782d29c4f4d..4a0fff4fdee 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "debug": "^4.0.1",
     "doctrine": "^3.0.0",
     "eslint-scope": "^5.0.0",
-    "eslint-utils": "^1.4.0",
+    "eslint-utils": "^1.4.2",
     "eslint-visitor-keys": "^1.1.0",
     "espree": "^6.1.0",
     "esquery": "^1.0.1",
diff --git a/tests/lib/rules/require-unicode-regexp.js b/tests/lib/rules/require-unicode-regexp.js
index 38a125096e2..18f5fb25c90 100644
--- a/tests/lib/rules/require-unicode-regexp.js
+++ b/tests/lib/rules/require-unicode-regexp.js
@@ -30,7 +30,7 @@ ruleTester.run("require-unicode-regexp", rule, {
         "new RegExp('', 'gimuy')",
         "const flags = 'u'; new RegExp('', flags)",
         "const flags = 'g'; new RegExp('', flags + 'u')",
-        "const flags = 'gimu'; new RegExp('foo', flags.slice(1))",
+        "const flags = 'gimu'; new RegExp('foo', flags[3])",
         "new RegExp('', flags)",
         "function f(flags) { return new RegExp('', flags) }",
         "function f(RegExp) { return new RegExp('foo') }"
@@ -73,7 +73,7 @@ ruleTester.run("require-unicode-regexp", rule, {
             errors: [{ messageId: "requireUFlag" }]
         },
         {
-            code: "const flags = 'gimu'; new RegExp('foo', flags.slice(0, -1))",
+            code: "const flags = 'gimu'; new RegExp('foo', flags[0])",
             errors: [{ messageId: "requireUFlag" }]
         },
         {