diff --git a/builds/Resources/Include_verilator.mk b/builds/Resources/Include_verilator.mk
index 3a76abb..4845f6e 100644
--- a/builds/Resources/Include_verilator.mk
+++ b/builds/Resources/Include_verilator.mk
@@ -50,6 +50,12 @@ SIM_EXE_FILE = exe_HW_sim
 VERILATOR_FLAGS = --stats --x-assign fast --x-initial fast --noassert
 # VERILATOR_FLAGS = --stats -O3 -CFLAGS -O3 -LDFLAGS -static --x-assign fast --x-initial fast --noassert
 
+# XXX: Allow lint_off DEPRECATED for older Verilator versions.
+#      This was added around the same time as -msg was deprecated, so we need
+#      to suppress the deprecation messages without breaking older versions.
+#      See verilator_config.vlt. Remove once 4.026 can be relied upon.
+VERILATOR_FLAGS += -Wfuture-DEPRECATED
+
 # Verilator flags: use the following to include code to generate VCDs
 # Select trace-depth according to your module hierarchy
 # VERILATOR_FLAGS += --trace  --trace-depth 2  -CFLAGS -DVM_TRACE
diff --git a/builds/Resources/Verilator_resources/verilator_config.vlt b/builds/Resources/Verilator_resources/verilator_config.vlt
index c0e8c0e..81ad329 100644
--- a/builds/Resources/Verilator_resources/verilator_config.vlt
+++ b/builds/Resources/Verilator_resources/verilator_config.vlt
@@ -2,6 +2,12 @@
 
 // Flags for verilator
 
+// -msg is deprecated in 4.026 (Jan 2020) and replaced by -rule. Use -msg and
+// ignore deprecation warnings until we can rely on -rule support. We also rely
+// on -Wfuture-DEPRECATED since that warning category didn't even exist prior
+// to 4.026. For some reason this needs to be in a pragma comment rather than
+// in `verilator_config for -Wfuture-DEPRECATED to affect it.
+// verilator lint_off DEPRECATED
 `verilator_config
 lint_off -msg WIDTH
 lint_off -msg CASEINCOMPLETE
@@ -10,3 +16,4 @@ lint_off -msg INITIALDLY
 lint_off -msg UNSIGNED
 lint_off -msg CMPCONST
 `verilog
+// verilator lint_on DEPRECATED