diff --git a/javascript/ql/src/semmle/javascript/dependencies/FrameworkLibraries.qll b/javascript/ql/src/semmle/javascript/dependencies/FrameworkLibraries.qll
index e9245ac2383..d874aa1fce2 100644
--- a/javascript/ql/src/semmle/javascript/dependencies/FrameworkLibraries.qll
+++ b/javascript/ql/src/semmle/javascript/dependencies/FrameworkLibraries.qll
@@ -816,6 +816,33 @@ private class RequireJS extends FrameworkLibraryWithGenericURL, FrameworkLibrary
   }
 }
 
+/**
+ * A copy of the Microsoft ApplicationInsights framework.
+ */
+private class ApplicationInsightsInstance extends FrameworkLibraryInstance {
+  string version;
+
+  ApplicationInsightsInstance() {
+    version = this.(TopLevel).getFile().getAbsolutePath().regexpCapture(any(ApplicationInsights t).getAURLRegex(), 1)
+  }
+
+  override predicate info(FrameworkLibrary fl, string v) {
+    fl instanceof ApplicationInsights and
+    version = v
+  }
+}
+
+/**
+ * The Microsoft ApplicationInsights framework.
+ */
+private class ApplicationInsights extends FrameworkLibraryWithURLRegex {
+  ApplicationInsights() { this = "ApplicationInsights" }
+
+  override string getAURLRegex() {
+    result = ".*(?:^|/)ai\\.(" + semverRegex() + ")-build\\d+\\.js"
+  }
+}
+
 /**
  * A `FrameworkLibraryReference` that refers to a recognised `FrameworkLibraryInstance`,
  * that is, a `<script>` tag where the `src` attribute can be resolved to a local file
diff --git a/javascript/ql/test/query-tests/filters/ClassifyFiles/ClassifyFiles.expected b/javascript/ql/test/query-tests/filters/ClassifyFiles/ClassifyFiles.expected
index 4665609096d..de42628eb3b 100644
--- a/javascript/ql/test/query-tests/filters/ClassifyFiles/ClassifyFiles.expected
+++ b/javascript/ql/test/query-tests/filters/ClassifyFiles/ClassifyFiles.expected
@@ -1,3 +1,4 @@
+| ai.1.2.3-build0123.js:0:0:0:0 | ai.1.2.3-build0123.js | library |
 | bundle-directive.js:0:0:0:0 | bundle-directive.js | generated |
 | jison-lex.js:0:0:0:0 | jison-lex.js | generated |
 | jison.js:0:0:0:0 | jison.js | generated |
diff --git a/javascript/ql/test/query-tests/filters/ClassifyFiles/ai.1.2.3-build0123.js b/javascript/ql/test/query-tests/filters/ClassifyFiles/ai.1.2.3-build0123.js
new file mode 100644
index 00000000000..8b137891791
--- /dev/null
+++ b/javascript/ql/test/query-tests/filters/ClassifyFiles/ai.1.2.3-build0123.js
@@ -0,0 +1 @@
+