diff --git a/contrib/gitian-descriptors/gitian-linux.yml b/contrib/gitian-descriptors/gitian-linux.yml
index 8bb3308a0c..73d7c6ca31 100644
--- a/contrib/gitian-descriptors/gitian-linux.yml
+++ b/contrib/gitian-descriptors/gitian-linux.yml
@@ -29,8 +29,8 @@ files:
 - "bitmark-deps-linux64-gitian-r6.zip"
 - "boost-linux32-1.55.0-gitian-r1.zip"
 - "boost-linux64-1.55.0-gitian-r1.zip"
-- "qt-linux32-4.6.4-gitian-r1.tar.gz"
-- "qt-linux64-4.6.4-gitian-r1.tar.gz"
+- "qt-linux32-4.8.6-gitian-r1.tar.gz"
+- "qt-linux64-4.8.6-gitian-r1.tar.gz"
 script: |
   STAGING="$HOME/install"
   OPTFLAGS='-O2'
@@ -45,7 +45,7 @@ script: |
   cd $STAGING
   unzip ../build/bitmark-deps-linux${GBUILD_BITS}-gitian-r6.zip
   unzip ../build/boost-linux${GBUILD_BITS}-1.55.0-gitian-r1.zip
-  tar -zxf ../build/qt-linux${GBUILD_BITS}-4.6.4-gitian-r1.tar.gz
+  tar -zxf ../build/qt-linux${GBUILD_BITS}-4.8.6-gitian-r1.tar.gz
   cd ../build
 
   # Avoid exporting *any* symbols from the executable
diff --git a/contrib/gitian-descriptors/qt-linux.yml b/contrib/gitian-descriptors/qt-linux.yml
index b163b4bb8c..bb02253d90 100644
--- a/contrib/gitian-descriptors/qt-linux.yml
+++ b/contrib/gitian-descriptors/qt-linux.yml
@@ -14,7 +14,7 @@ packages:
 reference_datetime: "2011-01-30 00:00:00"
 remotes: []
 files:
-- "qt-everywhere-opensource-src-4.6.4.tar.gz"
+- "qt-everywhere-opensource-src-4.8.6.tar.gz"
 script: |
   export FAKETIME=$REFERENCE_DATETIME
   export TZ=UTC
@@ -30,15 +30,15 @@ script: |
   # Also build development tools.
   INSTALLPREFIX="$HOME/install"
   # Integrity Check
-  echo "9ad4d46c721b53a429ed5a2eecfd3c239a9ab566562f183f99d3125f1a234250  qt-everywhere-opensource-src-4.6.4.tar.gz" | sha256sum -c
+  echo "8b14dd91b52862e09b8e6a963507b74bc2580787d171feda197badfa7034032c  qt-everywhere-opensource-src-4.8.6.tar.gz" | sha256sum -c
   # Make install directories
   mkdir -p $INSTALLPREFIX
   mkdir -p $INSTALLPREFIX/include
   PKGCONFIGDIR=$INSTALLPREFIX/lib/pkgconfig
   mkdir -p $PKGCONFIGDIR
   #
-  tar xzf qt-everywhere-opensource-src-4.6.4.tar.gz
-  cd qt-everywhere-opensource-src-4.6.4
+  tar xzf qt-everywhere-opensource-src-4.8.6.tar.gz
+  cd qt-everywhere-opensource-src-4.8.6
   QTBUILDDIR=$(pwd)
   sed 's/TODAY=`date +%Y-%m-%d`/TODAY=2011-01-30/' -i configure
 
@@ -261,4 +261,4 @@ script: |
   # as zip stores file timestamps, use faketime to intercept stat calls to set dates for all files to reference date
   export LD_PRELOAD=/usr/lib/faketime/libfaketime.so.1
   # Create a .tar.gz because .zip has problems with symbolic links
-  find | sort | tar --no-recursion -cT /dev/stdin --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 --mtime="$REFERENCE_DATETIME" | gzip -n > $OUTDIR/qt-linux${GBUILD_BITS}-4.6.4-gitian-r1.tar.gz
+  find | sort | tar --no-recursion -cT /dev/stdin --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 --mtime="$REFERENCE_DATETIME" | gzip -n > $OUTDIR/qt-linux${GBUILD_BITS}-4.8.6-gitian-r1.tar.gz
diff --git a/doc/release-process.md b/doc/release-process.md
index caf887715a..45082baa36 100644
--- a/doc/release-process.md
+++ b/doc/release-process.md
@@ -53,7 +53,7 @@ Release Process
 	wget 'https://svn.boost.org/trac/boost/raw-attachment/ticket/7262/boost-mingw.patch' -O \ 
 	     boost-mingw-gas-cross-compile-2013-03-03.patch
 	wget 'https://download.qt-project.org/official_releases/qt/5.2/5.2.0/single/qt-everywhere-opensource-src-5.2.0.tar.gz'
-	wget 'https://download.qt-project.org/archive/qt/4.6/qt-everywhere-opensource-src-4.6.4.tar.gz'
+	wget 'https://download.qt-project.org/archive/qt/4.8/4.8.6/qt-everywhere-opensource-src-4.8.6.tar.gz'
 	wget 'https://protobuf.googlecode.com/files/protobuf-2.5.0.tar.bz2'
 	wget 'https://github.com/mingwandroid/toolchain4/archive/10cc648683617cca8bcbeae507888099b41b530c.tar.gz'
 	wget 'http://www.opensource.apple.com/tarballs/cctools/cctools-809.tar.gz'