diff --git a/test/CMakePassthroughVOLTests.cmake b/test/CMakePassthroughVOLTests.cmake
index 8c7d7979e7..928654e652 100644
--- a/test/CMakePassthroughVOLTests.cmake
+++ b/test/CMakePassthroughVOLTests.cmake
@@ -99,6 +99,8 @@ endif ()
       tcheck_version
       testmeta
       links_env
+      external_env
+      vds_env
   )
   if (NOT CYGWIN)
     list (REMOVE_ITEM H5_VOL_SKIP_TESTS big cache)
diff --git a/test/CMakeVFDTests.cmake b/test/CMakeVFDTests.cmake
index 64ccacd1ec..383b2f4212 100644
--- a/test/CMakeVFDTests.cmake
+++ b/test/CMakeVFDTests.cmake
@@ -102,6 +102,8 @@ endif ()
       tcheck_version
       testmeta
       links_env
+      external_env
+      vds_env
   )
   if (NOT CYGWIN)
     list (REMOVE_ITEM H5_VFD_SKIP_TESTS big cache)