diff --git a/build.sh b/build.sh
index 7678c58bd..7d4122159 100755
--- a/build.sh
+++ b/build.sh
@@ -5,6 +5,12 @@ set -eu
 
 ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
+if [ -n "${TEAMCITY_VERSION:-}" ]; then
+  # install dependencies
+  $ROOT/prebuild.sh
+fi
+
+
 (
   cd "$ROOT/electron"
   npm install
@@ -41,17 +47,22 @@ cp -R "$ROOT/lbry-web-ui/dist" "$ROOT/electron/"
 mv "$ROOT/lbrynet/dist/lbry" "$ROOT/electron/dist"
 
 if [ -n "${TEAMCITY_VERSION:-}" ]; then
-  # macOS
-  electron-packager --electron-version=1.4.14 --platform=darwin --overwrite "$ROOT/electron" LBRY
+  electron-packager --electron-version=1.4.14 --overwrite "$ROOT/electron" LBRY
 
-  # linux
-  electron-packager --electron-version=1.4.14 --platform=linux --overwrite "$ROOT/electron" LBRY
   (
     cd "$ROOT"
-    tar cvzf lbry.tgz "LBRY-linux-x64/"
-  )
+    if [ "$(uname)" == "Darwin" ]; then
+      OS="osx"
+      PLATFORM="darwin"
+    elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
+      OS="linux"
+      PLATFORM="linux"
+    else
+      OS="unknown"
+    fi
 
-  #windows ... coming soon
+    tar cvzf "lbry-${OS}.tgz" "LBRY-${PLATFORM}-x64/"
+  )
 
   echo 'Build and packaging complete.'
 else
diff --git a/prebuild.sh b/prebuild.sh
new file mode 100755
index 000000000..fdca42987
--- /dev/null
+++ b/prebuild.sh
@@ -0,0 +1,84 @@
+#!/bin/bash
+
+set -euo pipefail
+set -x
+
+
+LINUX=false
+OSX=false
+
+if [ "$(uname)" == "Darwin" ]; then
+  OSX=true
+elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
+  LINUX=true
+else
+  echo "Platform detection failed"
+  exit 1
+fi
+
+
+SUDO=''
+if $LINUX && (( $EUID != 0 )); then
+    SUDO='sudo'
+fi
+
+cmd_exists() {
+  command -v "$1" >/dev/null 2>&1
+  return $?
+}
+
+
+
+if $LINUX; then
+  INSTALL="$SUDO apt-get install --no-install-recommends -y"
+  $INSTALL build-essential libssl-dev libffi-dev libgmp3-dev
+elif $OSX && ! cmd_exists brew ; then
+  /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
+fi
+
+
+if ! cmd_exists python; then
+  if $LINUX; then
+    $INSTALL python2.7 python2.7-dev
+  elif $OSX; then
+    brew install python
+  fi
+fi
+
+PYTHON_VERSION=$(python -c 'import sys; print(".".join(map(str, sys.version_info[:2])))')
+if [ "$PYTHON_VERSION" != "2.7" ]; then
+  echo "Python 2.7 required"
+  exit 1
+fi
+
+if ! cmd_exists pip; then
+  if $LINUX; then
+    $INSTALL python-pip
+    $SUDO pip install --upgrade pip
+  else
+    echo "Pip required"
+    exit 1
+  fi
+fi
+
+if $LINUX && ! (pip list --format=columns | grep --quiet setuptools); then
+  #$INSTALL python-setuptools
+  $SUDO pip install setuptools
+fi
+
+if ! cmd_exists pyinstaller; then
+  $SUDO pip install pyinstaller
+fi
+
+if ! cmd_exists node; then
+  if $LINUX; then
+    curl -sL https://deb.nodesource.com/setup_7.x | $SUDO -E bash -
+    $INSTALL nodejs
+  elif $OSX; then
+    brew install node
+  fi
+fi
+
+if ! cmd_exists electron-packager; then
+  $SUDO npm install --global electron-packager
+fi