diff --git a/package.json b/package.json
index 272197c..6f044fc 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "@typescript-eslint/eslint-plugin": "4.28.5",
     "@typescript-eslint/eslint-plugin-tslint": "4.28.5",
     "@typescript-eslint/parser": "4.28.5",
-    "c8": "^7.7.3",
+    "c8": "7.7.3",
     "chai": "4.3.4",
     "chai-as-promised": "7.1.1",
     "eslint": "7.31.0",
diff --git a/yarn.lock b/yarn.lock
index 46a902b..a927add 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -686,7 +686,7 @@ builtin-modules@^3.1.0:
   resolved "https://artifacts.apextoaster.com/repository/group-npm/builtin-modules/-/builtin-modules-3.1.0.tgz#aad97c15131eb76b65b50ef208e7584cd76a7484"
   integrity sha512-k0KL0aWZuBt2lrxrcASWDfwOLMnodeQjodT/1SxEQAXsHANgo6ZC/VEaSEHCXt7aSTZ4/4H5LKa+tBXmW7Vtvw==
 
-c8@^7.7.3:
+c8@7.7.3:
   version "7.7.3"
   resolved "https://artifacts.apextoaster.com/repository/group-npm/c8/-/c8-7.7.3.tgz#5af8f83b55dace03b353375e7a2ba85e2c13b17f"
   integrity sha512-ZyA7n3w8i4ETV25tVYMHwJxCSnaOf/LfA8vOcuZOPbonuQfD7tBT/gMWZy7eczRpCDuHcvMXwoqAemg6R0p3+A==