diff --git a/package-lock.json b/package-lock.json
index 2353cd97b..bd467730e 100644
--- a/package-lock.json
+++ b/package-lock.json
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-          "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+          "version": "git+ssh://git@github.com/ethereumjs/ethereumjs-abi.git#8431eab7b3384e65e8126a4602520b78031666fb",
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@@ -10001,15 +10001,6 @@
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@@ -11450,6 +11441,15 @@
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+          "bundled": true,
+          "dev": true,
+          "requires": {
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+            "through": ">=2.2.7 <3"
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@@ -12094,9 +12094,9 @@
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+            "JSONStream": "^1.3.4",
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@@ -12911,6 +12911,14 @@
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+          "dev": true,
+          "requires": {
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@@ -12940,14 +12948,6 @@
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@@ -13633,9 +13633,9 @@
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       "requires": {
-        "JSONStream": "^1.3.4",
         "bluebird": "^3.5.1",
         "figgy-pudding": "^3.4.1",
+        "JSONStream": "^1.3.4",
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@@ -13844,9 +13844,9 @@
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     "openzeppelin-solidity": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/openzeppelin-solidity/-/openzeppelin-solidity-2.2.0.tgz",
-      "integrity": "sha512-HfQq0xyT+EPs/lTWEd5Odu4T7CYdYe+qwf54EH28FQZthp4Bs6IWvOlOumTdS2dvpwZoTXURAopHn2LN1pwAGQ=="
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/openzeppelin-solidity/-/openzeppelin-solidity-2.5.1.tgz",
+      "integrity": "sha512-oCGtQPLOou4su76IMr4XXJavy9a8OZmAXeUZ8diOdFznlL/mlkIlYr7wajqCzH4S47nlKPS7m0+a2nilCTpVPQ=="
     },
     "optimist": {
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@@ -15757,8 +15757,8 @@
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-      "version": "github:PolymathNetwork/solidoc#43a7b24330d1df0b81171edde75cabfeb6874b97",
-      "from": "github:PolymathNetwork/solidoc",
+      "version": "git+ssh://git@github.com/PolymathNetwork/solidoc.git#43a7b24330d1df0b81171edde75cabfeb6874b97",
+      "from": "solidoc@PolymathNetwork/solidoc",
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@@ -16173,6 +16173,21 @@
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+    "string_decoder": {
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+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
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+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
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@@ -16207,21 +16222,6 @@
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@@ -17588,8 +17588,8 @@
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-          "from": "github:frozeman/WebSocket-Node#browserifyCompatible",
+          "version": "git+ssh://git@github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
+          "from": "websocket@github:frozeman/WebSocket-Node#browserifyCompatible",
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             "nan": "^2.3.3",
@@ -18362,8 +18362,8 @@
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-          "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
+          "version": "git+ssh://git@github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
+          "from": "websocket@git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
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@@ -18420,9 +18420,9 @@
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-          "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
+          "version": "git+ssh://git@github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
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+          "from": "websocket@git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
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diff --git a/package.json b/package.json
index 0f9562667..0c87a8832 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
   "homepage": "https://github.com/PolymathNetwork/polymath-core#readme",
   "dependencies": {
     "dotenv": "^8.0.0",
-    "openzeppelin-solidity": "2.2.0",
+    "openzeppelin-solidity": "2.5.1",
     "solc": "0.5.8",
     "solidity-coverage": "^0.6.3",
     "solidoc": "PolymathNetwork/solidoc",