diff --git a/README.md b/README.md
index ea8667851..fa74d56d5 100755
--- a/README.md
+++ b/README.md
@@ -501,6 +501,7 @@ Supported operating systems and hardware:
 * 2013-10-17, Created.<br/>
 
 ## History
+* v2.0, 2015-01-02, hotfix [#216](https://github.com/winlinvip/simple-rtmp-server/issues/216), http-callback post in application/json content-type. 2.0.83
 * v2.0, 2014-01-02, fix [#263](https://github.com/winlinvip/simple-rtmp-server/issues/263), srs-librtmp flv read tag should init size. 2.0.82
 * v2.0, 2015-01-01, hotfix [#270](https://github.com/winlinvip/simple-rtmp-server/issues/270), memory leak for http client post. 2.0.81
 * v2.0, 2014-12-12, fix [#266](https://github.com/winlinvip/simple-rtmp-server/issues/266), aac profile is object id plus one. 2.0.80
@@ -547,6 +548,7 @@ Supported operating systems and hardware:
 * v2.0, 2014-10-18, remove supports for OSX(darwin). 2.0.1.
 * v2.0, 2014-10-16, revert github srs README to English. 2.0.0.
 
+* v1.0, 2015-01-02, hotfix [#216](https://github.com/winlinvip/simple-rtmp-server/issues/216), http-callback post in application/json content-type. 1.0.17
 * v1.0, 2015-01-01, hotfix [#270](https://github.com/winlinvip/simple-rtmp-server/issues/270), memory leak for http client post. 1.0.16
 * v1.0, 2014-12-29, hotfix [#267](https://github.com/winlinvip/simple-rtmp-server/issues/267), the forward dest ep should use server. 1.0.15
 * v1.0, 2014-12-29, hotfix [#268](https://github.com/winlinvip/simple-rtmp-server/issues/268), the hls pcr is negative when startup. 1.0.14
diff --git a/trunk/src/app/srs_app_http_client.cpp b/trunk/src/app/srs_app_http_client.cpp
index 498d545aa..71e2e6b3a 100644
--- a/trunk/src/app/srs_app_http_client.cpp
+++ b/trunk/src/app/srs_app_http_client.cpp
@@ -81,7 +81,7 @@ int SrsHttpClient::post(SrsHttpUri* uri, string req, string& res)
         << "Connection: Keep-Alive" << __SRS_CRLF
         << "Content-Length: " << std::dec << req.length() << __SRS_CRLF
         << "User-Agent: " << RTMP_SIG_SRS_NAME << RTMP_SIG_SRS_VERSION << __SRS_CRLF
-        << "Content-Type: text/html" << __SRS_CRLF
+        << "Content-Type: application/json" << __SRS_CRLF
         << __SRS_CRLF
         << req;
     
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 9833b7add..7c0b04be9 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    82
+#define VERSION_REVISION    83
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"
 #define RTMP_SIG_SRS_ROLE "origin/edge server"