diff --git a/sdk/search/search-documents/CHANGELOG.md b/sdk/search/search-documents/CHANGELOG.md
index cc6f1bcbaddf..197a4ded79c5 100644
--- a/sdk/search/search-documents/CHANGELOG.md
+++ b/sdk/search/search-documents/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Release History
 
+## 11.3.2 (2023-05-09)
+
+### Bugs Fixed
+
+- Fix ISO8601 deserialization [#25802](https://github.com/Azure/azure-sdk-for-js/pull/25802)
+
 ## 11.3.1 (2022-11-18)
 
 ### Bugs Fixed
diff --git a/sdk/search/search-documents/src/serialization.ts b/sdk/search/search-documents/src/serialization.ts
index ffd7e657241e..7feea94a0c2e 100644
--- a/sdk/search/search-documents/src/serialization.ts
+++ b/sdk/search/search-documents/src/serialization.ts
@@ -3,7 +3,7 @@
 
 import GeographyPoint from "./geographyPoint";
 
-const ISO8601DateRegex = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{3})?Z$/i;
+const ISO8601DateRegex = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{1,3})?Z$/i;
 const GeoJSONPointTypeName = "Point";
 const WorldGeodeticSystem1984 = "EPSG:4326"; // See https://epsg.io/4326
 
diff --git a/sdk/search/search-documents/test/internal/serialization.spec.ts b/sdk/search/search-documents/test/internal/serialization.spec.ts
index 14c97b75e13a..dc5b516932fa 100644
--- a/sdk/search/search-documents/test/internal/serialization.spec.ts
+++ b/sdk/search/search-documents/test/internal/serialization.spec.ts
@@ -116,6 +116,11 @@ describe("serialization.deserialize", () => {
     assert.deepEqual(result, { a: new Date(Date.UTC(1975, 3, 4)) });
   });
 
+  it("Date with truncated ms field", function () {
+    const result = deserialize({ a: "1975-04-04T00:00:00.0Z" });
+    assert.deepEqual(result, { a: new Date(Date.UTC(1975, 3, 4)) });
+  });
+
   it("doesn't deserialize as Date if text before", () => {
     const value = "before 1975-04-04T00:00:00.000Z";
     const result = deserialize({ a: value });