diff --git a/bitcoin-qt.pro b/bitcoin-qt.pro
index 92103f1e39..57ef409977 100644
--- a/bitcoin-qt.pro
+++ b/bitcoin-qt.pro
@@ -298,7 +298,7 @@ OTHER_FILES += \
 # platform specific defaults, if not overridden on command line
 isEmpty(BOOST_LIB_SUFFIX) {
     macx:BOOST_LIB_SUFFIX = -mt
-    windows:BOOST_LIB_SUFFIX = -mgw44-mt-s-1_49
+    windows:BOOST_LIB_SUFFIX = -mgw44-mt-s-1_50
 }
 
 isEmpty(BOOST_THREAD_LIB_SUFFIX) {
diff --git a/contrib/gitian-descriptors/boost-win32.yml b/contrib/gitian-descriptors/boost-win32.yml
index c4a9f33100..1eeb9eaa28 100644
--- a/contrib/gitian-descriptors/boost-win32.yml
+++ b/contrib/gitian-descriptors/boost-win32.yml
@@ -11,12 +11,12 @@ packages:
 reference_datetime: "2011-01-30 00:00:00"
 remotes: []
 files:
-- "boost_1_49_0.tar.bz2"
+- "boost_1_50_0.tar.bz2"
 script: |
   TMPDIR="$HOME/tmpdir"
   mkdir -p $TMPDIR/bin/$GBUILD_BITS $TMPDIR/include
-  tar xjf boost_1_49_0.tar.bz2
-  cd boost_1_49_0
+  tar xjf boost_1_50_0.tar.bz2
+  cd boost_1_50_0
   echo "using gcc : 4.4 : i586-mingw32msvc-g++
         :
         <rc>i586-mingw32msvc-windres
@@ -34,5 +34,5 @@ script: |
   cd $TMPDIR
   export LD_PRELOAD=/usr/lib/faketime/libfaketime.so.1
   export FAKETIME=$REFERENCE_DATETIME
-  zip -r boost-win32-1.49.0-gitian2.zip *
-  cp boost-win32-1.49.0-gitian2.zip $OUTDIR
+  zip -r boost-win32-1.50.0-gitian2.zip *
+  cp boost-win32-1.50.0-gitian2.zip $OUTDIR
diff --git a/contrib/gitian-descriptors/gitian-win32.yml b/contrib/gitian-descriptors/gitian-win32.yml
index fed0b90e6c..89c22da942 100644
--- a/contrib/gitian-descriptors/gitian-win32.yml
+++ b/contrib/gitian-descriptors/gitian-win32.yml
@@ -16,7 +16,7 @@ remotes:
   "dir": "bitcoin"
 files:
 - "qt-win32-4.7.4-gitian.zip"
-- "boost-win32-1.49.0-gitian2.zip"
+- "boost-win32-1.50.0-gitian2.zip"
 - "bitcoin-deps-0.0.4.zip"
 script: |
   #
@@ -26,10 +26,10 @@ script: |
   cd $HOME/build/
   export PATH=$PATH:$HOME/qt/bin/
   #
-  mkdir boost_1_49_0
-  cd boost_1_49_0
+  mkdir boost_1_50_0
+  cd boost_1_50_0
   mkdir -p stage/lib
-  unzip ../boost-win32-1.49.0-gitian2.zip
+  unzip ../boost-win32-1.50.0-gitian2.zip
   cd bin/$GBUILD_BITS
   for lib in *; do
     i586-mingw32msvc-ar rc ../../stage/lib/libboost_${lib}-mt-s.a $lib/*.o
@@ -51,7 +51,7 @@ script: |
   export LD_PRELOAD=/usr/lib/faketime/libfaketime.so.1
   export FAKETIME=$REFERENCE_DATETIME
   export TZ=UTC
-  $HOME/qt/src/bin/qmake -spec unsupported/win32-g++-cross MINIUPNPC_LIB_PATH=$HOME/build/miniupnpc MINIUPNPC_INCLUDE_PATH=$HOME/build/ BDB_LIB_PATH=$HOME/build/db-4.8.30.NC/build_unix BDB_INCLUDE_PATH=$HOME/build/db-4.8.30.NC/build_unix BOOST_LIB_PATH=$HOME/build/boost_1_49_0/stage/lib BOOST_INCLUDE_PATH=$HOME/build/boost_1_49_0 BOOST_LIB_SUFFIX=-mt-s BOOST_THREAD_LIB_SUFFIX=_win32-mt-s OPENSSL_LIB_PATH=$HOME/build/openssl-1.0.1b OPENSSL_INCLUDE_PATH=$HOME/build/openssl-1.0.1b/include QRENCODE_LIB_PATH=$HOME/build/qrencode-3.2.0/.libs QRENCODE_INCLUDE_PATH=$HOME/build/qrencode-3.2.0 USE_QRCODE=1 INCLUDEPATH=$HOME/build DEFINES=BOOST_THREAD_USE_LIB BITCOIN_NEED_QT_PLUGINS=1 QMAKE_LRELEASE=lrelease QMAKE_CXXFLAGS=-frandom-seed=bitcoin QMAKE_LFLAGS=-frandom-seed=bitcoin USE_BUILD_INFO=1
+  $HOME/qt/src/bin/qmake -spec unsupported/win32-g++-cross MINIUPNPC_LIB_PATH=$HOME/build/miniupnpc MINIUPNPC_INCLUDE_PATH=$HOME/build/ BDB_LIB_PATH=$HOME/build/db-4.8.30.NC/build_unix BDB_INCLUDE_PATH=$HOME/build/db-4.8.30.NC/build_unix BOOST_LIB_PATH=$HOME/build/boost_1_50_0/stage/lib BOOST_INCLUDE_PATH=$HOME/build/boost_1_50_0 BOOST_LIB_SUFFIX=-mt-s BOOST_THREAD_LIB_SUFFIX=_win32-mt-s OPENSSL_LIB_PATH=$HOME/build/openssl-1.0.1b OPENSSL_INCLUDE_PATH=$HOME/build/openssl-1.0.1b/include QRENCODE_LIB_PATH=$HOME/build/qrencode-3.2.0/.libs QRENCODE_INCLUDE_PATH=$HOME/build/qrencode-3.2.0 USE_QRCODE=1 INCLUDEPATH=$HOME/build DEFINES=BOOST_THREAD_USE_LIB BITCOIN_NEED_QT_PLUGINS=1 QMAKE_LRELEASE=lrelease QMAKE_CXXFLAGS=-frandom-seed=bitcoin QMAKE_LFLAGS=-frandom-seed=bitcoin USE_BUILD_INFO=1
   make $MAKEOPTS
   cp release/bitcoin-qt.exe $OUTDIR/
   #
diff --git a/src/makefile.linux-mingw b/src/makefile.linux-mingw
index ad74aa6c91..93e3fe9aa6 100644
--- a/src/makefile.linux-mingw
+++ b/src/makefile.linux-mingw
@@ -10,13 +10,13 @@ USE_IPV6:=1
 INCLUDEPATHS= \
  -I"$(CURDIR)" \
  -I"$(CURDIR)"/obj \
- -I"$(DEPSDIR)/boost_1_49_0" \
+ -I"$(DEPSDIR)/boost_1_50_0" \
  -I"$(DEPSDIR)/db-4.8.30.NC/build_unix" \
  -I"$(DEPSDIR)/openssl-1.0.1b/include" \
  -I"$(DEPSDIR)"
 
 LIBPATHS= \
- -L"$(DEPSDIR)/boost_1_49_0/stage/lib" \
+ -L"$(DEPSDIR)/boost_1_50_0/stage/lib" \
  -L"$(DEPSDIR)/db-4.8.30.NC/build_unix" \
  -L"$(DEPSDIR)/openssl-1.0.1b"
 
diff --git a/src/makefile.mingw b/src/makefile.mingw
index 6102dad613..58a12e209a 100644
--- a/src/makefile.mingw
+++ b/src/makefile.mingw
@@ -6,20 +6,20 @@ USE_UPNP:=0
 USE_IPV6:=1
 
 INCLUDEPATHS= \
- -I"C:\boost-1.49.0-mgw" \
+ -I"C:\boost-1.50.0-mgw" \
  -I"C:\db-4.8.30.NC-mgw\build_unix" \
  -I"C:\openssl-1.0.1b-mgw\include"
 
 LIBPATHS= \
- -L"C:\boost-1.49.0-mgw\stage\lib" \
+ -L"C:\boost-1.50.0-mgw\stage\lib" \
  -L"C:\db-4.8.30.NC-mgw\build_unix" \
  -L"C:\openssl-1.0.1b-mgw"
 
 LIBS= \
- -l boost_system-mgw45-mt-s-1_49 \
- -l boost_filesystem-mgw45-mt-s-1_49 \
- -l boost_program_options-mgw45-mt-s-1_49 \
- -l boost_thread-mgw45-mt-s-1_49 \
+ -l boost_system-mgw45-mt-s-1_50 \
+ -l boost_filesystem-mgw45-mt-s-1_50 \
+ -l boost_program_options-mgw45-mt-s-1_50 \
+ -l boost_thread-mgw45-mt-s-1_50 \
  -l db_cxx \
  -l ssl \
  -l crypto