diff --git a/src/resources/extensions/gsd/unit-runtime.ts b/src/resources/extensions/gsd/unit-runtime.ts
index 8384ea401..cb4fab2cc 100644
--- a/src/resources/extensions/gsd/unit-runtime.ts
+++ b/src/resources/extensions/gsd/unit-runtime.ts
@@ -51,8 +51,8 @@ function runtimeDir(basePath: string): string {
 }
 
 function runtimePath(basePath: string, unitType: string, unitId: string): string {
-  const sanitizedUnitType = unitType.replace(/[\/]/g, "-");
-  const sanitizedUnitId = unitId.replace(/[\/]/g, "-");
+  const sanitizedUnitType = unitType.replace(/[^a-zA-Z0-9._-]+/g, "-");
+  const sanitizedUnitId = unitId.replace(/[^a-zA-Z0-9._-]+/g, "-");
   return join(runtimeDir(basePath), `${sanitizedUnitType}-${sanitizedUnitId}.json`);
 }