diff --git a/src/versionmanager.ts b/src/versionmanager.ts
index 9bee512b..67f327eb 100644
--- a/src/versionmanager.ts
+++ b/src/versionmanager.ts
@@ -524,7 +524,9 @@ export function getCurrentDependencies(pkgData: PackageFile = {}, options: Optio
     : ['dev', 'optional', 'peer', 'prod', 'bundle']
 
   // map the dependency section option to a full dependency section name
-  const depSections = depOptions.map(short => short === 'prod' ? 'dependencies' : short + 'Dependencies')
+  const depSections = depOptions.map(short =>
+    (short === 'prod' ? 'dependencies' : short + 'Dependencies') as keyof PackageFile
+  )
 
   // get all dependencies from the selected sections
   // if a dependency appears in more than one section, take the lowest version number