diff --git a/src/registries/npm.ts b/src/registries/npm.ts
index 1074cf2..b7bb376 100644
--- a/src/registries/npm.ts
+++ b/src/registries/npm.ts
@@ -176,6 +176,12 @@ export class NpmRegistry extends Registry {
       // Runtime dependencies
       if (versionData.dependencies) {
         for (const [depName, requirements] of Object.entries(versionData.dependencies)) {
+          if (
+            versionData.optionalDependencies &&
+            Object.hasOwn(versionData.optionalDependencies, depName)
+          ) {
+            continue;
+          }
           dependencies.push({
             name: depName,
             requirements,
diff --git a/test/unit/registries.test.ts b/test/unit/registries.test.ts
index c360e80..29220fe 100644
--- a/test/unit/registries.test.ts
+++ b/test/unit/registries.test.ts
@@ -194,6 +194,7 @@ describe("Registry Modules", () => {
         version: "4.17.21",
         dependencies: {
           underscore: "^1.0.0",
+          fsevents: "^2.3.0",
         },
         devDependencies: {
           mocha: "^10.0.0",