diff --git a/CHANGELOG.md b/CHANGELOG.md
index 093a979..32a7f43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [4.0.7](https://github.com/IBM/go-sdk-core/compare/v4.0.6...v4.0.7) (2020-07-28)
+
+
+### Bug Fixes
+
+* use isNil() for interface{} values ([e1c27a0](https://github.com/IBM/go-sdk-core/commit/e1c27a00aecba6550c82ead865e1e1b9b5423fe6))
+
 ## [4.0.6](https://github.com/IBM/go-sdk-core/compare/v4.0.5...v4.0.6) (2020-07-14)
 
 
diff --git a/package-lock.json b/package-lock.json
index 3e18099..438976f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -70,31 +70,45 @@
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+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/@octokit/endpoint/-/endpoint-6.0.5.tgz",
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-        "universal-user-agent": "^5.0.0"
+        "is-plain-object": "^4.0.0",
+        "universal-user-agent": "^6.0.0"
+      },
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+        }
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     },
     "@octokit/graphql": {
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-      "resolved": "https://registry.npmjs.org/@octokit/graphql/-/graphql-4.5.1.tgz",
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+      "resolved": "https://registry.npmjs.org/@octokit/graphql/-/graphql-4.5.2.tgz",
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         "@octokit/types": "^5.0.0",
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+        "universal-user-agent": "^6.0.0"
+      },
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+        }
       }
     },
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-      "resolved": "https://registry.npmjs.org/@octokit/plugin-paginate-rest/-/plugin-paginate-rest-2.2.3.tgz",
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+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/@octokit/plugin-paginate-rest/-/plugin-paginate-rest-2.3.0.tgz",
+      "integrity": "sha512-Ye2ZJreP0ZlqJQz8fz+hXvrEAEYK4ay7br1eDpWzr6j76VXs/gKqxFcH8qRzkB3fo/2xh4Vy9VtGii4ZDc9qlA==",
       "requires": {
-        "@octokit/types": "^5.0.0"
+        "@octokit/types": "^5.2.0"
       }
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     "@octokit/plugin-request-log": {
@@ -122,18 +136,25 @@
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     "@octokit/request": {
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-      "resolved": "https://registry.npmjs.org/@octokit/request/-/request-5.4.5.tgz",
-      "integrity": "sha512-atAs5GAGbZedvJXXdjtKljin+e2SltEs48B3naJjqWupYl2IUBbB/CJisyjbNHcKpHzb3E+OYEZ46G8eakXgQg==",
+      "version": "5.4.7",
+      "resolved": "https://registry.npmjs.org/@octokit/request/-/request-5.4.7.tgz",
+      "integrity": "sha512-FN22xUDP0i0uF38YMbOfx6TotpcENP5W8yJM1e/LieGXn6IoRxDMnBf7tx5RKSW4xuUZ/1P04NFZy5iY3Rax1A==",
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         "@octokit/types": "^5.0.0",
         "deprecation": "^2.0.0",
-        "is-plain-object": "^3.0.0",
+        "is-plain-object": "^4.0.0",
         "node-fetch": "^2.3.0",
         "once": "^1.4.0",
-        "universal-user-agent": "^5.0.0"
+        "universal-user-agent": "^6.0.0"
+      },
+      "dependencies": {
+        "universal-user-agent": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/universal-user-agent/-/universal-user-agent-6.0.0.tgz",
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+        }
       }
     },
     "@octokit/request-error": {
@@ -158,9 +179,9 @@
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+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/@octokit/types/-/types-5.2.0.tgz",
+      "integrity": "sha512-XjOk9y4m8xTLIKPe1NFxNWBdzA2/z3PFFA/bwf4EoH6oS8hM0Y46mEa4Cb+KCyj/tFDznJFahzQ0Aj3o1FYq4A==",
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@@ -238,9 +259,9 @@
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     },
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-      "version": "14.0.23",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.0.23.tgz",
-      "integrity": "sha512-Z4U8yDAl5TFkmYsZdFPdjeMa57NOvnaf1tljHzhouaPEp7LCj2JKkejpI1ODviIAQuW4CcQmxkQ77rnLsOOoKw=="
+      "version": "14.0.26",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.0.26.tgz",
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     "@types/retry": {
       "version": "0.12.0",
@@ -533,9 +554,9 @@
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     },
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-      "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-3.0.1.tgz",
-      "integrity": "sha512-Xnpx182SBMrr/aBik8y+GuR4U1L9FqMSojwDQwPMmxyC6bvEqly9UBCxhauBF5vNh2gwWJNX6oDV7O+OM4z34g=="
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-4.1.1.tgz",
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@@ -614,9 +635,9 @@
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-      "resolved": "https://registry.npmjs.org/macos-release/-/macos-release-2.4.0.tgz",
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+      "version": "2.4.1",
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     },
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@@ -728,9 +749,9 @@
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+      "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-5.0.1.tgz",
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