diff --git a/cmake/externals/nvtt/CMakeLists.txt b/cmake/externals/nvtt/CMakeLists.txt
index 91e63e6324..fa9d7b5ea1 100644
--- a/cmake/externals/nvtt/CMakeLists.txt
+++ b/cmake/externals/nvtt/CMakeLists.txt
@@ -9,7 +9,7 @@ if (WIN32)
   ExternalProject_Add(
     ${EXTERNAL_NAME}
     URL http://s3.amazonaws.com/hifi-public/dependencies/nvtt-win-2.1.0.hifi.zip
-    URL_MD5 907f2c683e2bcf8b8089576ec38747b4
+    URL_MD5 10da01cf601f88f6dc12a6bc13c89136
     CONFIGURE_COMMAND ""
     BUILD_COMMAND ""
     INSTALL_COMMAND ""
@@ -30,7 +30,7 @@ else ()
   ExternalProject_Add(
     ${EXTERNAL_NAME}
     URL http://hifi-public.s3.amazonaws.com/dependencies/nvidia-texture-tools-2.1.0.hifi.zip
-    URL_MD5 cda96482825225511d3effabbc1ddc7e
+    URL_MD5 5794b950f8b265a9a41b2839b3bf7ebb
     CONFIGURE_COMMAND CMAKE_ARGS  ${ANDROID_CMAKE_ARGS} -DNVTT_SHARED=1 -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
     LOG_DOWNLOAD 1
     LOG_CONFIGURE 1