diff --git a/cmake/std/atdm/waterman/tweaks/Tweaks.cmake b/cmake/std/atdm/waterman/tweaks/Tweaks.cmake
index 9adc0ba4b1e6..98d782e0c794 100644
--- a/cmake/std/atdm/waterman/tweaks/Tweaks.cmake
+++ b/cmake/std/atdm/waterman/tweaks/Tweaks.cmake
@@ -6,6 +6,9 @@
 ATDM_SET_ENABLE(PanzerAdaptersIOSS_tIOSSConnManager2_MPI_2_DISABLE ON)
 ATDM_SET_ENABLE(PanzerAdaptersIOSS_tIOSSConnManager3_MPI_3_DISABLE ON)
 
+# Disable randomly timing out test in all 'waterman' builds (#6463)
+ATDM_SET_ENABLE(Teko_testdriver_tpetra_MPI_4_DISABLE ON)
+
 IF (Trilinos_ENABLE_DEBUG)
 
   # STEQR() test fails on IBM Power systems with current TPL setup (#2410, #6166)