diff --git a/centaur/test_cromwell.sh b/centaur/test_cromwell.sh
index 2f330f1feb0..9161f2da5ad 100755
--- a/centaur/test_cromwell.sh
+++ b/centaur/test_cromwell.sh
@@ -37,7 +37,7 @@ Arguments:
 INITIAL_DIR=$(pwd)
 RUN_DIR=$(pwd)
 LOG_DIR="${RUN_DIR}"/logs
-TEST_THREAD_COUNT=16
+TEST_THREAD_COUNT=16  # Note that most users of this script override this value
 CENTAUR_SBT_COVERAGE=false
 CROMWELL_TIMEOUT=10s
 SUITE=""
diff --git a/src/ci/bin/testCentaurTes.sh b/src/ci/bin/testCentaurTes.sh
index 8822a727b24..7cad5b26832 100755
--- a/src/ci/bin/testCentaurTes.sh
+++ b/src/ci/bin/testCentaurTes.sh
@@ -58,9 +58,10 @@ startup_funnel
 # read_file_limits:          Fail only in Travis for unknown reason (Note that the draft 3 version does not fail)
 # docker_hash_dockerhub:     Prone to request rate limiting by Dockerhub
 
-# Limiting Centaur to 4 threads here in order to try to prevent exceeding the OS's max open files limit: BA-6153
+# Setting threads to 8 upon moving from Travis to Github Actions. If we run into problems with
+# exceeding the OS's max open files limit, reduce. See BA-6153.
 cromwell::build::run_centaur \
-    -p 2 \
+    -p 8 \
     -e docker_hash_dockerhub \
     -e call_cache_capoeira_local \
     -e draft3_call_cache_capoeira_local \