diff --git a/core/test/scripts/run-mocha-tests.js b/core/test/scripts/run-mocha-tests.js
index eb237a07567f..09af9b8c9232 100644
--- a/core/test/scripts/run-mocha-tests.js
+++ b/core/test/scripts/run-mocha-tests.js
@@ -146,6 +146,9 @@ const rawArgv = y
     'require': {
       type: 'string',
     },
+    'retries': {
+      type: 'number',
+    },
   })
   .wrap(y.terminalWidth())
   .argv;
@@ -259,6 +262,7 @@ function exit({numberFailures, numberMochaInvocations}) {
  * @property {boolean} bail
  * @property {boolean} parallel
  * @property {string | undefined} require
+ * @property {number | undefined} retries
  */
 
 /**
@@ -281,6 +285,7 @@ async function runMocha(tests, mochaArgs, invocationNumber) {
       // TODO: not working
       // parallel: tests.length > 1 && mochaArgs.parallel,
       parallel: false,
+      retries: mochaArgs.retries,
     });
 
     // @ts-expect-error - not in types.
@@ -325,6 +330,7 @@ async function main() {
     bail: argv.bail,
     parallel: argv.parallel,
     require: argv.require,
+    retries: argv.retries,
   };
 
   mochaGlobalSetup();
diff --git a/package.json b/package.json
index ba80efafba03..5135f65742ce 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "unit-viewer": "yarn mocha --testMatch viewer/**/*-test.js",
     "unit-flow": "bash flow-report/test/run-flow-report-tests.sh",
     "unit": "yarn unit-flow && yarn mocha",
-    "unit:ci": "NODE_OPTIONS=--max-old-space-size=8192 npm run unit --forbid-only",
+    "unit:ci": "NODE_OPTIONS=--max-old-space-size=8192 npm run unit --forbid-only --retries=5",
     "core-unit": "yarn unit-core",
     "cli-unit": "yarn unit-cli",
     "viewer-unit": "yarn unit-viewer",