diff --git a/.circleci/config.yml b/.circleci/config.yml
index a861a83fc..0ae2f1f43 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -272,7 +272,7 @@ workflows:
             - setup
           matrix:
             parameters:
-              test_make_target: ["test-race", "test-txstore-rbf_bolt"]
+              test_make_target: ["test-race"]
       - test:
           name: test-shardwidth-22
           context: molecula
diff --git a/Makefile b/Makefile
index 2c2ac0456..6fb679f91 100644
--- a/Makefile
+++ b/Makefile
@@ -341,6 +341,9 @@ install-gometalinter:
 test-txstore-rbf:
 	PILOSA_STORAGE_BACKEND=rbf $(MAKE) testv-race
 
+# WARNING: This feature is no longer being tested regularly in CI. The test is
+# very slow and very expensive, and we're not sure it actually provides useful
+# information now.
 test-txstore-rbf_bolt:
 	PILOSA_STORAGE_BACKEND=rbf_bolt $(MAKE) testv-race