diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8708ba04..f6031cd6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+Version 351:
+
+* Use the explicit type std::size_t when completing transfer_op
+
+--------------------------------------------------------------------------------
+
 Version 350:
 
 * Allocation and invocation hooks are removed
diff --git a/CMakeLists.txt b/CMakeLists.txt
index dbc8adde..3b30a372 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -83,7 +83,7 @@ endfunction()
 #
 #-------------------------------------------------------------------------------
 
-project (Beast VERSION 350)
+project (Beast VERSION 351)
 
 set_property (GLOBAL PROPERTY USE_FOLDERS ON)
 option (Beast_BUILD_EXAMPLES "Build examples" ON)
diff --git a/include/boost/beast/version.hpp b/include/boost/beast/version.hpp
index e95d8e93..782c338a 100644
--- a/include/boost/beast/version.hpp
+++ b/include/boost/beast/version.hpp
@@ -20,7 +20,7 @@
    This is a simple integer that is incremented by one every
    time a set of code changes is merged to the develop branch.
 */
-#define BOOST_BEAST_VERSION 350
+#define BOOST_BEAST_VERSION 351
 
 // A string describing BOOST_BEAST_VERSION, that can be used in http headers.
 #define BOOST_BEAST_VERSION_STRING "Boost.Beast/" BOOST_STRINGIZE(BOOST_BEAST_VERSION)