diff --git a/package.json b/package.json
index 55d9b79..73a42c8 100644
--- a/package.json
+++ b/package.json
@@ -5,10 +5,10 @@
   "version": "1.0.2",
   "license": "MIT",
   "dependencies": {
-    "temp": "~0.5.1"
+    "temp": "~0.8.1"
   },
   "devDependencies": {
-    "chai": "~1.5.0",
+    "chai": "~1.10.0",
     "mocha": "~1.9.0"
   },
   "optionalDependencies": {},
diff --git a/src/shell.cpp b/src/shell.cpp
index e12fe31..5707126 100644
--- a/src/shell.cpp
+++ b/src/shell.cpp
@@ -1,5 +1,6 @@
 #include <node.h>
 #include <string>
+#include <vector>
 
 #ifdef _WIN32
 
@@ -31,9 +32,12 @@ int exec(const char* command) {
     si.cb = sizeof(si);
     ZeroMemory(&pi, sizeof(pi));
 
+    int command_len = strlen(command);
+    std::vector<char> command_copy(&command[0], &command[command_len]);
+
     // Start the child process.
     if(!CreateProcess(NULL,     // No module name (use command line)
-                (LPSTR) command,// Command line
+                (LPSTR) &command_copy[0],// Command line
                 NULL,           // Process handle not inheritable
                 NULL,           // Thread handle not inheritable
                 FALSE,          // Set handle inheritance to FALSE