diff --git a/lib/internal/crypto/util.js b/lib/internal/crypto/util.js
index eafcc3d9669288..7c901e307fcd39 100644
--- a/lib/internal/crypto/util.js
+++ b/lib/internal/crypto/util.js
@@ -8,6 +8,7 @@ const {
   Number,
   ObjectKeys,
   Promise,
+  SafeMap,
   StringPrototypeToLowerCase,
   Symbol,
 } = primordials;
@@ -62,12 +63,14 @@ const {
 const kHandle = Symbol('kHandle');
 const kKeyObject = Symbol('kKeyObject');
 
-const lazyRequireCache = {};
+const lazyRequireCache = new SafeMap();
 
 function lazyRequire(name) {
-  let ret = lazyRequireCache[name];
-  if (ret === undefined)
-    ret = lazyRequireCache[name] = require(name);
+  let ret = lazyRequireCache.get(name);
+  if (ret === undefined) {
+    ret = require(name);
+    lazyRequireCache.set(name, ret);
+  }
   return ret;
 }