diff --git a/NEWS.md b/NEWS.md
index 8af5b674..9d7bfeb2 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,6 @@
 1.2.1
 ------
+* Require Windshaft-0.12.1 to fix multilayer post from firefox
 
 1.2.0
 ------
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index b9dec20d..bee9c4c1 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -1,6 +1,6 @@
 {
   "name": "windshaft-cartodb",
-  "version": "1.1.10",
+  "version": "1.2.1",
   "dependencies": {
     "cluster2": {
       "version": "0.3.5-cdb02",
@@ -193,7 +193,7 @@
       "version": "1.3.3"
     },
     "windshaft": {
-      "version": "0.12.0",
+      "version": "0.12.1",
       "dependencies": {
         "grainstore": {
           "version": "0.13.0",
@@ -210,7 +210,7 @@
                   "version": "0.1.14",
                   "dependencies": {
                     "sax": {
-                      "version": "0.5.2"
+                      "version": "0.5.4"
                     }
                   }
                 }
@@ -222,6 +222,9 @@
             "millstone": {
               "version": "0.5.15",
               "dependencies": {
+                "generic-pool": {
+                  "version": "1.0.12"
+                },
                 "request": {
                   "version": "2.11.4",
                   "dependencies": {
@@ -272,7 +275,7 @@
               "version": "1.9.2",
               "dependencies": {
                 "formidable": {
-                  "version": "1.0.13"
+                  "version": "1.0.14"
                 }
               }
             },
@@ -288,7 +291,7 @@
           }
         },
         "tilelive": {
-          "version": "4.4.2",
+          "version": "4.4.3",
           "dependencies": {
             "optimist": {
               "version": "0.3.7",
diff --git a/package.json b/package.json
index 7a3c888b..35b631c0 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
         "cluster2": "git://github.com/CartoDB/cluster2.git#cdb_production",
         "node-varnish": "0.1.1",
         "underscore"  : "~1.3.3",
-        "windshaft"  : "~0.12.0",
+        "windshaft"  : "~0.12.1",
         "step": "0.0.x",
         "generic-pool": "~2.0.3",
         "redis": "0.7.2",