diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a089906..c560f0b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -86,31 +86,35 @@ jobs:
 
         - name: Node.js 10.x
           node-version: "10.24"
-          npm-i: mocha@8.4.0
+          npm-i: mocha@8.4.0 nyc@15.1.0
 
         - name: Node.js 11.x
           node-version: "11.15"
-          npm-i: mocha@8.4.0
+          npm-i: mocha@8.4.0 nyc@15.1.0
 
         - name: Node.js 12.x
           node-version: "12.22"
-          npm-i: mocha@9.2.2
+          npm-i: mocha@9.2.2 nyc@15.1.0
 
         - name: Node.js 13.x
           node-version: "13.14"
-          npm-i: mocha@9.2.2
+          npm-i: mocha@9.2.2 nyc@15.1.0
 
         - name: Node.js 14.x
           node-version: "14.21"
+          npm-i: nyc@15.1.0
 
         - name: Node.js 15.x
           node-version: "15.14"
+          npm-i: nyc@15.1.0
 
         - name: Node.js 16.x
           node-version: "16.19"
+          npm-i: nyc@15.1.0
 
         - name: Node.js 17.x
           node-version: "17.9"
+          npm-i: nyc@15.1.0
 
         - name: Node.js 18.x
           node-version: "18.19"
diff --git a/package.json b/package.json
index 3eeb970..7ab0eeb 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "eslint-plugin-promise": "6.6.0",
     "eslint-plugin-standard": "4.1.0",
     "mocha": "10.7.0",
-    "nyc": "15.1.0",
+    "nyc": "17.0.0",
     "readable-stream": "2.3.7",
     "safe-buffer": "5.2.1"
   },