diff --git a/package-lock.json b/package-lock.json
index 649463e..759812e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "mailgun-js",
-  "version": "0.22.0",
+  "version": "0.23.0",
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+      "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-1.1.2.tgz",
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@@ -60,12 +65,17 @@
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+      "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-8.2.0.tgz",
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+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
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@@ -166,9 +176,12 @@
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+      "version": "0.13.4",
+      "resolved": "https://registry.npmjs.org/ast-types/-/ast-types-0.13.4.tgz",
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@@ -215,7 +228,7 @@
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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@@ -282,9 +295,9 @@
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-      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
+      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
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@@ -436,9 +450,9 @@
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+      "version": "3.0.1",
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-      "integrity": "sha1-/PSQo37OJmRk2cxDGrmMWBnO0JU=",
+      "version": "3.0.3",
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-        "escodegen": "1.x.x",
-        "esprima": "3.x.x"
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+        "escodegen": "^1.8.1",
+        "esprima": "^4.0.0",
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@@ -528,9 +543,9 @@
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-      "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
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@@ -591,19 +606,6 @@
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@@ -611,22 +613,15 @@
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+      "resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.14.3.tgz",
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@@ -908,9 +903,9 @@
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-      "integrity": "sha1-/cpRzuYTOJXjyI1TXOSdv/YqRjM="
+      "version": "4.0.1",
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@@ -943,7 +938,8 @@
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+      "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==",
+      "dev": true
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@@ -999,9 +995,9 @@
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@@ -1047,6 +1043,23 @@
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+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-8.1.0.tgz",
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+        "jsonfile": "^4.0.0",
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-          "requires": {
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+        "@tootallnate/once": "1",
+        "data-uri-to-buffer": "3",
+        "debug": "4",
+        "file-uri-to-path": "2",
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@@ -1162,8 +1152,7 @@
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+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-2.0.0.tgz",
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+        "@tootallnate/once": "1",
+        "agent-base": "6",
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@@ -1273,27 +1253,12 @@
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+        "agent-base": "6",
+        "debug": "4"
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@@ -1358,9 +1323,9 @@
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+          "version": "8.8.2",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.8.2.tgz",
+          "integrity": "sha512-xjIYgE8HBrkpd/sJqOGNspf8uHG+NOHGOw6a/Urj8taM2EXfdNAH2oFcPeIFfsv3+kz/mJrS5VuMqbNLjCa2vw=="
+        }
+      }
+    },
     "which": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
@@ -2876,7 +2826,7 @@
     "xregexp": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-2.0.0.tgz",
-      "integrity": "sha1-UqY+VsoLhKfzpfPWGHLxJq16WUM="
+      "integrity": "sha512-xl/50/Cf32VsGq/1R8jJE5ajH1yMCQkpmoS10QbFZWl2Oor4H0Me64Pu2yxvsRWK3m6soJbmGfzSR7BYmDcWAA=="
     },
     "xtend": {
       "version": "4.0.1",
diff --git a/package.json b/package.json
index 4d79b14..d4f6e5a 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "is-stream": "^1.1.0",
     "path-proxy": "~1.0.0",
     "promisify-call": "^2.0.2",
-    "proxy-agent": "^3.1.1",
+    "proxy-agent": "^5.0.0",
     "tsscmp": "^1.0.6"
   },
   "author": {