diff --git a/.appveyor.yml b/.appveyor.yml
index eac7a36c..b14fe0a8 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -3,6 +3,10 @@ version: 1.0.{build}
 image: Visual Studio 2015
 platform: x64
 
+branches:
+  only:
+    - master
+
 environment:
   matrix:
   - COMPILER: msys2
diff --git a/.travis.yml b/.travis.yml
index 99882187..ac880b3c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,7 +32,7 @@ install:
     - if [ "$CC" = "gcc" ]; then export CC="gcc-4.8"; fi
 script:
     - ./configure --datadir=$(pwd)/data
-    - make
+    - make -j4
     - if [[ $DICTIONARIES_CHANGED -ne 0 ]]; then ./src/build_address_dictionary; fi;
     - if [[ $NUMEX_CHANGED -ne 0 ]]; then ./src/build_numex_table; fi;
     - if [[ $TRANSLIT_CHANGED -ne 0 ]]; then ./src/build_trans_table; fi;
diff --git a/README.md b/README.md
index 1ce427b8..439443d1 100644
--- a/README.md
+++ b/README.md
@@ -118,7 +118,7 @@ git clone https://github.com/openvenues/libpostal
 cd libpostal
 ./bootstrap.sh
 ./configure --datadir=[...some dir with a few GB of space...]
-make
+make -j4
 sudo make install
 
 # On Linux it's probably a good idea to run
@@ -163,7 +163,7 @@ cd libpostal
 cp -rf windows/* ./
 ./bootstrap.sh
 ./configure --datadir=[...some dir with a few GB of space...]
-make
+make -j4
 make install
 ```
 Notes: When setting the datadir, the `C:` drive would be entered as `/c`. The libpostal build script automatically add `libpostal` on the end of the path, so '/c' would become `C:\libpostal\` on Windows.
diff --git a/win_build.bat b/win_build.bat
index 8b0db748..f7779bbe 100644
--- a/win_build.bat
+++ b/win_build.bat
@@ -17,7 +17,7 @@ IF %COMPILER%==msys2 (
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && cp -rf windows/* ./"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./bootstrap.sh"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./configure --datadir=/c"
-  bash -lc "cd $APPVEYOR_BUILD_FOLDER && make"
+  bash -lc "cd $APPVEYOR_BUILD_FOLDER && make -j4"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && make install"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && cp src/.libs/libpostal-*.dll libpostal.dll"
   "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\lib.exe" /def:libpostal.def /out:libpostal.lib /machine:x64