diff --git a/samples/client/petstore/typescript-fetch/tests/default/package-lock.json b/samples/client/petstore/typescript-fetch/tests/default/package-lock.json
index 44e99726237..0ff8b329f64 100644
--- a/samples/client/petstore/typescript-fetch/tests/default/package-lock.json
+++ b/samples/client/petstore/typescript-fetch/tests/default/package-lock.json
@@ -12,22 +12,22 @@
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@@ -35,7 +35,7 @@
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@@ -43,7 +43,7 @@
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@@ -688,6 +707,7 @@
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+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
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@@ -1492,10 +1514,10 @@
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       "dev": true,
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@@ -1737,16 +1759,6 @@
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-      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
+      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
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       "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
+      "dev": true,
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@@ -2087,7 +2101,8 @@
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-          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
+          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
+          "dev": true
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@@ -2132,6 +2147,7 @@
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       "dev": true,
       "requires": {
+        "JSONStream": "1.3.1",
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@@ -2139,7 +2155,6 @@
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@@ -2917,14 +2932,23 @@
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-      "integrity": "sha1-dc449SvwczxafwwRjYEzSiu19BI="
+      "integrity": "sha1-dc449SvwczxafwwRjYEzSiu19BI=",
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-      "integrity": "sha1-AyAt9lwG0r2MfsI2KhkwVv7407E=",
+      "version": "0.5.16",
+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.16.tgz",
+      "integrity": "sha512-efyLRJDr68D9hBBNIPWFjhpFzURh+KJykQwvMyW5UiZzYwoF6l4YMMDIJJEyFWxWCqfyxLzz6tSfUFR+kXXsVQ==",
       "requires": {
-        "source-map": "0.5.6"
+        "buffer-from": "^1.0.0",
+        "source-map": "^0.6.0"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
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+        }
       }
     },
     "stream-browserify": {
@@ -2970,15 +2994,6 @@
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-    "string_decoder": {
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-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
-      "dev": true,
-      "requires": {
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       "resolved": "https://registry.npmjs.org/string-template/-/string-template-1.0.0.tgz",
@@ -3012,6 +3027,15 @@
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+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "5.1.1"
+      }
+    },
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       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
@@ -3039,7 +3063,8 @@
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-      "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo="
+      "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
+      "dev": true
     },
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@@ -3166,36 +3191,15 @@
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-      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-3.3.0.tgz",
-      "integrity": "sha1-wTxqMCTjC+EYDdUwOPwgkonUv2k=",
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-8.0.0.tgz",
+      "integrity": "sha512-TaTyUnbnTXYwnO3Vt96DFa4E4rbYAskzelqorcCDp0l8lW6g833Us9wWqPuTClsnI4WH/KYVMbmgfecLvjrT1Q==",
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-        "chalk": "2.0.1",
-        "diff": "3.2.0",
-        "make-error": "1.3.0",
-        "minimist": "1.2.0",
-        "mkdirp": "0.5.1",
-        "source-map-support": "0.4.15",
-        "tsconfig": "6.0.0",
-        "v8flags": "3.0.0",
-        "yn": "2.0.0"
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-      "dependencies": {
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-          "version": "3.0.0",
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-          "integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM="
-        },
-        "tsconfig": {
-          "version": "6.0.0",
-          "resolved": "https://registry.npmjs.org/tsconfig/-/tsconfig-6.0.0.tgz",
-          "integrity": "sha1-aw6DdgA9evGGT434+J3QBZ/80DI=",
-          "requires": {
-            "strip-bom": "3.0.0",
-            "strip-json-comments": "2.0.1"
-          }
-        }
+        "arrify": "^1.0.0",
+        "diff": "^3.1.0",
+        "make-error": "^1.1.1",
+        "source-map-support": "^0.5.6",
+        "yn": "^2.0.0"
       }
     },
     "tsconfig": {
@@ -3468,11 +3472,6 @@
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@@ -3496,14 +3495,6 @@
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       "dev": true
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-      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.0.0.tgz",
-      "integrity": "sha512-AGl+C+4qpeSu2g3JxCD/mGFFOs/vVZ3XREkD3ibQXEqr4Y4zgIrPWW124/IKJFHOIVFIoH8miWrLf0o84HYjwA==",
-      "requires": {
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       "resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-0.0.4.tgz",
diff --git a/samples/client/petstore/typescript-fetch/tests/default/package.json b/samples/client/petstore/typescript-fetch/tests/default/package.json
index 96ac38788f2..a0fceb9a4f4 100644
--- a/samples/client/petstore/typescript-fetch/tests/default/package.json
+++ b/samples/client/petstore/typescript-fetch/tests/default/package.json
@@ -3,7 +3,7 @@
   "dependencies": {
     "@swagger/typescript-fetch-petstore": "file:../../builds/with-npm-version",
     "chai": "^4.1.0",
-    "ts-node": "^3.3.0"
+    "ts-node": "^8.0.0"
   },
   "scripts": {
     "prepublish": "npm install ../../builds/with-npm-version && npm run build && npm run webpack && npm run browserify",