diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index b5a38211..76d487e5 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -1,30 +1,30 @@
 {
   "name": "ripple-lib",
-  "version": "0.11.0",
+  "version": "0.12.0-rc1",
   "dependencies": {
     "async": {
       "version": "0.9.0",
-      "from": "async@~0.9.0",
+      "from": "async@>=0.9.0 <0.10.0",
       "resolved": "https://registry.npmjs.org/async/-/async-0.9.0.tgz"
     },
     "bignumber.js": {
       "version": "2.0.0",
-      "from": "bignumber.js@^2.0.0",
+      "from": "bignumber.js@>=2.0.0 <3.0.0",
       "resolved": "https://registry.npmjs.org/bignumber.js/-/bignumber.js-2.0.0.tgz"
     },
     "extend": {
       "version": "1.2.1",
-      "from": "extend@~1.2.1",
+      "from": "extend@>=1.2.1 <1.3.0",
       "resolved": "https://registry.npmjs.org/extend/-/extend-1.2.1.tgz"
     },
     "lodash": {
       "version": "3.1.0",
-      "from": "lodash@^3.1.0",
+      "from": "lodash@>=3.1.0 <4.0.0",
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.1.0.tgz"
     },
     "lru-cache": {
       "version": "2.5.0",
-      "from": "lru-cache@~2.5.0",
+      "from": "lru-cache@>=2.5.0 <2.6.0",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.5.0.tgz"
     },
     "ripple-wallet-generator": {
@@ -34,7 +34,7 @@
     },
     "superagent": {
       "version": "0.18.2",
-      "from": "superagent@^0.18.0",
+      "from": "superagent@>=0.18.0 <0.19.0",
       "resolved": "https://registry.npmjs.org/superagent/-/superagent-0.18.2.tgz",
       "dependencies": {
         "qs": {
@@ -69,7 +69,7 @@
         },
         "debug": {
           "version": "1.0.4",
-          "from": "debug@~1.0.1",
+          "from": "debug@>=1.0.1 <1.1.0",
           "resolved": "https://registry.npmjs.org/debug/-/debug-1.0.4.tgz",
           "dependencies": {
             "ms": {
@@ -91,7 +91,7 @@
           "dependencies": {
             "combined-stream": {
               "version": "0.0.7",
-              "from": "combined-stream@~0.0.4",
+              "from": "combined-stream@>=0.0.4 <0.1.0",
               "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-0.0.7.tgz",
               "dependencies": {
                 "delayed-stream": {
@@ -110,7 +110,7 @@
           "dependencies": {
             "core-util-is": {
               "version": "1.0.1",
-              "from": "core-util-is@~1.0.0",
+              "from": "core-util-is@>=1.0.0 <1.1.0",
               "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.1.tgz"
             },
             "isarray": {
@@ -120,12 +120,12 @@
             },
             "string_decoder": {
               "version": "0.10.31",
-              "from": "string_decoder@~0.10.x",
+              "from": "string_decoder@>=0.10.0 <0.11.0",
               "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz"
             },
             "inherits": {
               "version": "2.0.1",
-              "from": "inherits@~2.0.1",
+              "from": "inherits@>=2.0.1 <2.1.0",
               "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.1.tgz"
             }
           }
@@ -134,7 +134,7 @@
     },
     "ws": {
       "version": "0.7.1",
-      "from": "ws@~0.7.1",
+      "from": "ws@>=0.7.1 <0.8.0",
       "resolved": "https://registry.npmjs.org/ws/-/ws-0.7.1.tgz",
       "dependencies": {
         "options": {
@@ -144,39 +144,37 @@
         },
         "ultron": {
           "version": "1.0.1",
-          "from": "ultron@1.0.x",
+          "from": "ultron@>=1.0.0 <1.1.0",
           "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.0.1.tgz"
         },
         "bufferutil": {
           "version": "1.0.1",
-          "from": "bufferutil@1.0.x",
+          "from": "bufferutil@>=1.0.0 <1.1.0",
           "resolved": "https://registry.npmjs.org/bufferutil/-/bufferutil-1.0.1.tgz",
           "dependencies": {
             "bindings": {
               "version": "1.2.1",
-              "from": "bindings@1.2.x",
-              "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.2.1.tgz"
+              "from": "bindings@>=1.2.0 <1.3.0"
             },
             "nan": {
               "version": "1.6.1",
-              "from": "nan@1.6.x",
+              "from": "nan@>=1.6.0 <1.7.0",
               "resolved": "https://registry.npmjs.org/nan/-/nan-1.6.1.tgz"
             }
           }
         },
         "utf-8-validate": {
           "version": "1.0.1",
-          "from": "utf-8-validate@1.0.x",
+          "from": "utf-8-validate@>=1.0.0 <1.1.0",
           "resolved": "https://registry.npmjs.org/utf-8-validate/-/utf-8-validate-1.0.1.tgz",
           "dependencies": {
             "bindings": {
               "version": "1.2.1",
-              "from": "bindings@1.2.x",
-              "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.2.1.tgz"
+              "from": "bindings@>=1.2.0 <1.3.0"
             },
             "nan": {
               "version": "1.6.1",
-              "from": "nan@1.6.x",
+              "from": "nan@>=1.6.0 <1.7.0",
               "resolved": "https://registry.npmjs.org/nan/-/nan-1.6.1.tgz"
             }
           }
diff --git a/package.json b/package.json
index 573b3d48..322ed3a5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ripple-lib",
-  "version": "0.11.0",
+  "version": "0.12.0-rc1",
   "description": "A JavaScript API for interacting with Ripple in Node.js and the browser",
   "files": [
     "src/js/*",