diff --git a/CHANGELOG.md b/CHANGELOG.md
index 99943e2be..842b080f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+v0.12.2.4 (2015-07-12)
+----------------------
+* update OpenSSL to 1.0.1p and libpng to 1.5.22
+
 v0.12.2.3 (2015-06-20)
 ----------------------
 * update OpenSSL to 1.0.1o
diff --git a/VERSION b/VERSION
index 952a0653d..a8e0c694f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.12.2.3
\ No newline at end of file
+0.12.2.4
\ No newline at end of file
diff --git a/scripts/build.py b/scripts/build.py
index e67f7451c..924535b15 100755
--- a/scripts/build.py
+++ b/scripts/build.py
@@ -370,8 +370,8 @@
 DEPENDENT_LIBS = {
     'openssl': {
         'order' : 1,
-        'url'   : 'https://www.openssl.org/source/openssl-1.0.1o.tar.gz',
-        'sha1'  : 'b003e3382607ef2c6d85b51e4ed7a4c0a76b8d5a',
+        'url'   : 'https://www.openssl.org/source/openssl-1.0.1p.tar.gz',
+        'sha1'  : '9d1977cc89242cd11471269ece2ed4650947c046',
         'build' : {
             'msvc*-win32*': {
                 'result': ['include/openssl/ssl.h', 'lib/ssleay32.lib', 'lib/libeay32.lib'],
@@ -426,8 +426,8 @@
 
     'libpng': {
         'order' : 3,
-        'url' : 'http://downloads.sourceforge.net/libpng/libpng-1.5.21.tar.gz',
-        'sha1': '0ce1aa25abd55ad153516a29735b8ad432b4b771',
+        'url' : 'http://downloads.sourceforge.net/libpng/libpng-1.5.22.tar.gz',
+        'sha1': 'e912df0826dd6fb74f579ba60bf05c99807548ac',
         'build' : {
             'msvc*': {
                 'result': {