diff --git a/package-lock.json b/package-lock.json
index 90a6fb250e..9d18994894 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6005,20 +6005,12 @@
       }
     },
     "refa": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/refa/-/refa-0.7.0.tgz",
-      "integrity": "sha512-1QvdsiF7+bHLTiSlsl9CVP3K2+SpiG1dzJGf757sETf8PDLcV+D+hzAT7Nux8Qh1/lF+eE3AZqupBaWeshDx0g==",
+      "version": "0.8.0",
+      "resolved": "https://registry.npmjs.org/refa/-/refa-0.8.0.tgz",
+      "integrity": "sha512-qOf9zk1McAuGPtQ16nzuWCUg9zx3Quc48i6oD6nxWJdrFeh3Do0vCpIGYLij/1ysAbh5rxdUNg+YzSVBRycX5g==",
       "dev": true,
       "requires": {
         "regexpp": "^3.1.0"
-      },
-      "dependencies": {
-        "regexpp": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-3.1.0.tgz",
-          "integrity": "sha512-ZOIzd8yVsQQA7j8GCSlPGXwg5PfmA1mrq0JP4nGhh54LaKN3xdai/vHUDu74pKwV8OxseMS65u2NImosQcSD0Q==",
-          "dev": true
-        }
       }
     },
     "regenerator-runtime": {
@@ -6037,10 +6029,20 @@
         "safe-regex": "^1.1.0"
       }
     },
+    "regexp-ast-analysis": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/regexp-ast-analysis/-/regexp-ast-analysis-0.2.0.tgz",
+      "integrity": "sha512-ZVNwBF65Gn4CbRdPNYle8NAPFSDbbJ83svYUk4Mpqmr1QTUx2M06my9x7o8Hw/oFXDwXrJo/7W+ijLfFM5oG2Q==",
+      "dev": true,
+      "requires": {
+        "refa": "^0.8.0",
+        "regexpp": "^3.1.0"
+      }
+    },
     "regexpp": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-2.0.1.tgz",
-      "integrity": "sha512-lv0M6+TkDVniA3aD1Eg0DVpfU/booSu7Eev3TDO/mZKHBfVjgCGTV4t4buppESEYDtkArYFOxTJWv6S5C+iaNw==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-3.1.0.tgz",
+      "integrity": "sha512-ZOIzd8yVsQQA7j8GCSlPGXwg5PfmA1mrq0JP4nGhh54LaKN3xdai/vHUDu74pKwV8OxseMS65u2NImosQcSD0Q==",
       "dev": true
     },
     "regextras": {
@@ -6341,30 +6343,14 @@
       }
     },
     "scslre": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/scslre/-/scslre-0.1.1.tgz",
-      "integrity": "sha512-wsv9uvkNtTMIgNCRDY/Ys4ho//ltm/Fm+KgNMdn0de2TyBtU3O3OOw7E10Kxv4Acd2Gs6cQfODl0jvYvvK0dDA==",
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/scslre/-/scslre-0.1.3.tgz",
+      "integrity": "sha512-bJLnVqL3J3j+IwQGcOD81Ze2qdNH8IrjKz07MsxGV0EUE/OmlrFqfKHFUSUUkwefMwzZrGbuNlfQEDN9U9+a3A==",
       "dev": true,
       "requires": {
-        "refa": "^0.6.0",
+        "refa": "^0.8.0",
+        "regexp-ast-analysis": "^0.2.0",
         "regexpp": "^3.1.0"
-      },
-      "dependencies": {
-        "refa": {
-          "version": "0.6.0",
-          "resolved": "https://registry.npmjs.org/refa/-/refa-0.6.0.tgz",
-          "integrity": "sha512-jLBM8hbYs04CfiCG9ysn2XhANnRQWBtnv/1v0Qn3uixgW0vUe9Zr++xwyFsejaQkEgPg30K1X76yz46r5AZQSQ==",
-          "dev": true,
-          "requires": {
-            "regexpp": "^3.1.0"
-          }
-        },
-        "regexpp": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/regexpp/-/regexpp-3.1.0.tgz",
-          "integrity": "sha512-ZOIzd8yVsQQA7j8GCSlPGXwg5PfmA1mrq0JP4nGhh54LaKN3xdai/vHUDu74pKwV8OxseMS65u2NImosQcSD0Q==",
-          "dev": true
-        }
       }
     },
     "secure-compare": {
diff --git a/package.json b/package.json
index a86c549048..b58d947e05 100755
--- a/package.json
+++ b/package.json
@@ -52,9 +52,9 @@
     "jsdom": "^13.0.0",
     "mocha": "^6.2.0",
     "pump": "^3.0.0",
-    "refa": "^0.7.0",
-    "regexpp": "^2.0.1",
-    "scslre": "^0.1.1",
+    "refa": "^0.8.0",
+    "regexpp": "^3.1.0",
+    "scslre": "^0.1.3",
     "simple-git": "^1.107.0",
     "webfont": "^9.0.0",
     "yargs": "^13.2.2"
diff --git a/tests/pattern-tests.js b/tests/pattern-tests.js
index 90535e4489..242c98dfdf 100644
--- a/tests/pattern-tests.js
+++ b/tests/pattern-tests.js
@@ -8,7 +8,7 @@ const TestCase = require('./helper/test-case');
 const { BFS, parseRegex } = require('./helper/util');
 const { languages } = require('../components.json');
 const { visitRegExpAST } = require('regexpp');
-const { transform, combineTransformers, JS, Words, NFA, Transformers } = require('refa');
+const { transform, combineTransformers, getIntersectionWordSets, JS, Words, NFA, Transformers } = require('refa');
 const scslre = require('scslre');
 const path = require('path');
 
@@ -613,7 +613,7 @@ function checkExponentialBacktracking(path, pattern, ast) {
 			twoStar.quantify(2, Infinity);
 
 			if (!nfa.isDisjointWith(twoStar)) {
-				const word = Words.pickMostReadableWord(firstOf(nfa.intersectionWordSets(twoStar)));
+				const word = Words.pickMostReadableWord(firstOf(getIntersectionWordSets(nfa, twoStar)));
 				const example = Words.fromUnicodeToString(word);
 				assert.fail(`${path}: The quantifier \`${node.raw}\` ambiguous for all words ${JSON.stringify(example)}.repeat(n) for any n>1.`
 					+ ` This will cause exponential backtracking.`