diff --git a/.github/scripts/run-tests.sh b/.github/scripts/run-tests.sh
index d04b07fc..378dae0c 100755
--- a/.github/scripts/run-tests.sh
+++ b/.github/scripts/run-tests.sh
@@ -138,11 +138,10 @@ case $1 in
         run_binary LOADMEM=1 BINARY=$RISCV/riscv64-unknown-elf/share/riscv-tests/benchmarks/dhrystone.riscv
         ;;
     chipyard-vortex)
-        # FIXME fix args.bin
         run_binary BINARY=$LOCAL_CHIPYARD_DIR/generators/rocket-gpu/stimuli/vecadd.bin.elf
         ;;
     chipyard-coalescer)
-        run_binary BINARY=none
+        run_binary BINARY=none EXTRA_SIM_FLAGS="+memtracefile=$LOCAL_CHIPYARD_DIR/generators/rocket-gpu/tracefiles/vecadd.core1.thread4.trace"
         ;;
     icenet)
         run_binary BINARY=none
@@ -154,7 +153,7 @@ case $1 in
         run_binary BINARY=none
         ;;
     coalescer)
-        run_binary BINARY=none
+        run_binary BINARY=none EXTRA_SIM_FLAGS="+memtracefile=$LOCAL_CHIPYARD_DIR/generators/rocket-gpu/tracefiles/vecadd.core1.thread4.trace"
         ;;
     rocketchip-amba)
         run_binary BINARY=none