diff --git a/package-lock.json b/package-lock.json
index 1a22152..54c605c 100644
--- a/package-lock.json
+++ b/package-lock.json
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+        "abab": {
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+            "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.6.tgz",
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-            "dev": true,
-            "requires": {
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+            "resolved": "https://registry.npmjs.org/json5/-/json5-2.2.3.tgz",
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-            "resolved": "https://registry.npmjs.org/source-map-loader/-/source-map-loader-0.2.4.tgz",
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-                "loader-utils": "^1.1.0"
+                "abab": "^2.0.6",
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+                "iconv-lite": {
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+                    "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
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-                        "emojis-list": "^3.0.0",
-                        "json5": "^1.0.1"
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diff --git a/package.json b/package.json
index 8c81506..342a7b8 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
         "@types/node": "^10.17.5",
         "@types/react": "^16.9.11",
         "css-loader": "^6.5.1",
-        "source-map-loader": "^0.2.4",
+        "source-map-loader": "^4.0.1",
         "style-loader": "^1.2.1",
         "ts-loader": "^9.2.6",
         "ts-node": "^7.0.1",