diff --git a/.travis.yml b/.travis.yml
index 5cc7aab1..41aa7aca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,8 +26,8 @@ matrix:
 
     - os: linux
       env:
-        CFLAGS="-march=x86-64"
-        CPPFLAGS="-march=x86-64"
+        CFLAGS="-march=core2 -mtune=haswell -mssse3"
+        CPPFLAGS="-march=core2 -mtune=haswell -mssse3"
         PUBLISH=1
         ORG_GRADLE_PROJECT_TILEDB_S3="ON"
         ORG_GRADLE_PROJECT_TILEDB_SERIALIZATION="ON"
diff --git a/gradle.properties b/gradle.properties
index 1aeed97a..7819d514 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 TILEDB_JAVA_RELEASE=false
 TILEDB_GIT_REPOSITORY=https://github.com/TileDB-Inc/TileDB
-TILEDB_GIT_TAG=1.6.1
+TILEDB_GIT_TAG=1.6.2
 TILEDB_VERBOSE=OFF
 TILEDB_S3=OFF
 TILEDB_HDFS=OFF