diff --git a/Building-for-Ubuntu-16.04.md b/Building-for-Ubuntu-16.04.md
index 62d2495..e47a25d 100644
--- a/Building-for-Ubuntu-16.04.md
+++ b/Building-for-Ubuntu-16.04.md
@@ -11,7 +11,9 @@ The following instructions install `cmake` to `~/cmake`:
 
 ### GCC 7
 
-_TODO: add instruction for installing GCC 7_
+    sudo add-apt-repository ppa:jonathonf/gcc-7.1
+    sudo apt-get update
+    sudo apt-get install gcc-7 g++-7
 
 ### Other prerequisites
 
@@ -31,6 +33,8 @@ _TODO: add instruction for installing GCC 7_
     cd build
 
     export PATH=$HOME/cmake/cmake-3.9.0-Linux-x86_64/bin:$PATH
+    export CC="gcc-7"
+    export CXX="g++-7"
 
     cmake .. -DUSE_SYSTEM_CURL=ON -DCMAKE_BUILD_TYPE=Release
     make