diff --git a/binding.gyp b/binding.gyp
index c2f9c6526d2b138fd57673a664f817d982da79b7..52e0ea6c394e89478927ed37465d8568f2acc4ba 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -55,7 +55,8 @@
     'include_dirs': [
       '.',
       'include',
-      '<(node_root_dir)/deps/openssl/openssl/include'
+      '<(node_root_dir)/deps/openssl/openssl/include',
+      '<(node_root_dir)/deps/zlib'
     ],
     'conditions': [
       ['OS != "win"', {
diff --git a/templates/binding.gyp.template b/templates/binding.gyp.template
index 60a64273bfe3830cc02fea061082469fb42299c2..52070cf6e9e6c0ac450c95321df813eca0e125f4 100644
--- a/templates/binding.gyp.template
+++ b/templates/binding.gyp.template
@@ -57,7 +57,8 @@
       'include_dirs': [
         '.',
         'include',
-        '<(node_root_dir)/deps/openssl/openssl/include'
+        '<(node_root_dir)/deps/openssl/openssl/include',
+        '<(node_root_dir)/deps/zlib'
       ],
       'conditions': [
         ['OS != "win"', {