diff --git a/builder.Dockerfile b/builder.Dockerfile
index 3632f99452..45aca67c30 100644
--- a/builder.Dockerfile
+++ b/builder.Dockerfile
@@ -26,6 +26,7 @@ RUN buildDeps="build-essential \
     automake \
     bison \
     ccache" \
+    && add-apt-repository ppa:git-core/ppa \
     && apt-get update \
     && apt-get install -y --no-install-recommends $buildDeps \
     && apt-get clean \