diff --git a/package-lock.json b/package-lock.json
index d7205ff..ae377e3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1273,6 +1273,25 @@
         "@types/yargs": "^13.0.0"
       }
     },
+    "@rollup/pluginutils": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-3.1.0.tgz",
+      "integrity": "sha512-GksZ6pr6TpIjHm8h9lSQ8pi8BE9VeubNT0OMJ3B5uZJ8pz73NPiqOtCog/x2/QzM1ENChPKxMDhiQuRHsqc+lg==",
+      "dev": true,
+      "requires": {
+        "@types/estree": "0.0.39",
+        "estree-walker": "^1.0.1",
+        "picomatch": "^2.2.2"
+      },
+      "dependencies": {
+        "estree-walker": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-1.0.1.tgz",
+          "integrity": "sha512-1fMXF3YP4pZZVozF8j/ZLfvnR8NSIljt56UhbZ5PeeDmmGHpgpdwQt7ITlGvYaQukCvuBRMLEiKiYC+oeIg4cg==",
+          "dev": true
+        }
+      }
+    },
     "@sinonjs/commons": {
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.8.1.tgz",
@@ -6728,13 +6747,31 @@
       }
     },
     "rollup-plugin-sourcemaps": {
-      "version": "0.4.2",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-sourcemaps/-/rollup-plugin-sourcemaps-0.4.2.tgz",
-      "integrity": "sha1-YhJaqUCHqt97g+9N+vYptHMTXoc=",
+      "version": "0.6.2",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-sourcemaps/-/rollup-plugin-sourcemaps-0.6.2.tgz",
+      "integrity": "sha512-9AwTKg3yRykwzemfLt71ySe0LvrAci+bpsOL1LaTYFk5BX4HF6X7DQfpHa74ANfSja3hyjiQkXCR8goSOnW//Q==",
       "dev": true,
       "requires": {
-        "rollup-pluginutils": "^2.0.1",
-        "source-map-resolve": "^0.5.0"
+        "@rollup/pluginutils": "^3.0.9",
+        "source-map-resolve": "^0.6.0"
+      },
+      "dependencies": {
+        "atob": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
+          "integrity": "sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==",
+          "dev": true
+        },
+        "source-map-resolve": {
+          "version": "0.6.0",
+          "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.6.0.tgz",
+          "integrity": "sha512-KXBr9d/fO/bWo97NXsPIAW1bFSBOuCnjbNTBMO7N59hsv5i9yzRDfcYwwt0l04+VqnKC+EwzvJZIP/qkuMgR/w==",
+          "dev": true,
+          "requires": {
+            "atob": "^2.1.2",
+            "decode-uri-component": "^0.2.0"
+          }
+        }
       }
     },
     "rollup-plugin-typescript2": {
diff --git a/package.json b/package.json
index 9bde2ba..fb10c1d 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "rollup": "^2.23.0",
     "rollup-plugin-commonjs": "^10.1.0",
     "rollup-plugin-node-resolve": "^5.2.0",
-    "rollup-plugin-sourcemaps": "^0.4.2",
+    "rollup-plugin-sourcemaps": "^0.6.2",
     "rollup-plugin-typescript2": "^0.25.3",
     "ts-jest": "^26.1.4",
     "tslint": "^5.20.1",