diff --git a/.travis.yml b/.travis.yml
index 988ef66f8fadd..34ea8fe06439f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -48,6 +48,8 @@ matrix:
         RUSTC_RETRY_LINKER_ON_SEGFAULT=1
         SCCACHE_ERROR_LOG=/tmp/sccache.log
         RUST_LOG=sccache=debug
+        MACOSX_DEPLOYMENT_TARGET=10.7
+        ALLOW_PR=1
       os: osx
       osx_image: xcode8.2
       install: &osx_install_sccache >
@@ -60,6 +62,7 @@ matrix:
         RUSTC_RETRY_LINKER_ON_SEGFAULT=1
         SCCACHE_ERROR_LOG=/tmp/sccache.log
         RUST_LOG=sccache=debug
+        MACOSX_DEPLOYMENT_TARGET=10.7
       os: osx
       osx_image: xcode8.2
       install: *osx_install_sccache
@@ -72,6 +75,7 @@ matrix:
         RUSTC_RETRY_LINKER_ON_SEGFAULT=1
         SCCACHE_ERROR_LOG=/tmp/sccache.log
         RUST_LOG=sccache=debug
+        MACOSX_DEPLOYMENT_TARGET=10.7
       os: osx
       osx_image: xcode8.2
       install: >
@@ -85,6 +89,7 @@ matrix:
         RUSTC_RETRY_LINKER_ON_SEGFAULT=1
         SCCACHE_ERROR_LOG=/tmp/sccache.log
         RUST_LOG=sccache=debug
+        MACOSX_DEPLOYMENT_TARGET=10.7
       os: osx
       osx_image: xcode8.2
       install: *osx_install_sccache
@@ -102,6 +107,7 @@ matrix:
         RUSTC_RETRY_LINKER_ON_SEGFAULT=1
         SCCACHE_ERROR_LOG=/tmp/sccache.log
         RUST_LOG=sccache=debug
+        MACOSX_DEPLOYMENT_TARGET=10.7
       os: osx
       osx_image: xcode8.2
       install: *osx_install_sccache