diff --git a/javascript/ql/lib/semmle/javascript/frameworks/AsyncPackage.qll b/javascript/ql/lib/semmle/javascript/frameworks/AsyncPackage.qll
index db2487ce46a..c95b7a8dc6a 100644
--- a/javascript/ql/lib/semmle/javascript/frameworks/AsyncPackage.qll
+++ b/javascript/ql/lib/semmle/javascript/frameworks/AsyncPackage.qll
@@ -172,6 +172,7 @@ module AsyncPackage {
     DataFlow::FunctionNode getFinalCallback() { result = this.getCallback(finalCallbackIndex) }
   }
 
+  overlay[local?]
   private class IterationCallFlowSummary extends DataFlow::SummarizedCallable {
     private int callbackArgIndex;
 
@@ -219,6 +220,7 @@ module AsyncPackage {
    *
    * For example: `data -> result` in `async.sortBy(data, orderingFn, (err, result) => {})`.
    */
+  overlay[local?]
   private class IterationPreserveTaintStepFlowSummary extends DataFlow::SummarizedCallable {
     IterationPreserveTaintStepFlowSummary() { this = "async.sortBy" }
 
diff --git a/javascript/ql/lib/semmle/javascript/frameworks/LodashUnderscore.qll b/javascript/ql/lib/semmle/javascript/frameworks/LodashUnderscore.qll
index c6de3dd7316..3c6c4511f5b 100644
--- a/javascript/ql/lib/semmle/javascript/frameworks/LodashUnderscore.qll
+++ b/javascript/ql/lib/semmle/javascript/frameworks/LodashUnderscore.qll
@@ -362,6 +362,7 @@ module LodashUnderscore {
     }
   }
 
+  overlay[local?]
   private class LodashGroupBy extends DataFlow::SummarizedCallable {
     LodashGroupBy() { this = "_.groupBy" }