diff --git a/.changeset/big-kiwis-play.md b/.changeset/big-kiwis-play.md
new file mode 100644
index 0000000..d0c43ed
--- /dev/null
+++ b/.changeset/big-kiwis-play.md
@@ -0,0 +1,5 @@
+---
+'fireworkers': patch
+---
+
+fix: include missing `OR` operator for structured queries.
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 124dc6d..1947a0d 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,6 +1,6 @@
 {
   "editor.formatOnSave": true,
   "editor.codeActionsOnSave": {
-    "source.fixAll.eslint": true
+    "source.fixAll.eslint": "explicit"
   }
 }
diff --git a/src/types.ts b/src/types.ts
index ac09842..87aeec7 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -71,7 +71,7 @@ interface CompositeFilter {
   filters?: Filter[];
 }
 
-type CompositeFilterOp = 'OPERATOR_UNSPECIFIED' | 'AND';
+type CompositeFilterOp = 'OPERATOR_UNSPECIFIED' | 'AND' | 'OR';
 
 interface FieldFilter {
   field?: FieldReference;