diff --git a/.release-please-individual-manifest.json b/.release-please-individual-manifest.json
index 8f7a7b154539..23dc55db84bf 100644
--- a/.release-please-individual-manifest.json
+++ b/.release-please-individual-manifest.json
@@ -2,7 +2,7 @@
   "agentplatform": "0.21.0",
   "bigquery": "1.79.0",
   "bigtable": "1.50.0",
-  "datastore": "1.25.0",
+  "datastore": "1.26.0",
   "firestore": "1.24.0",
   "pubsub": "1.51.0",
   "pubsub/v2": "2.6.1",
diff --git a/datastore/CHANGES.md b/datastore/CHANGES.md
index fea38109b175..4d5d2e628843 100644
--- a/datastore/CHANGES.md
+++ b/datastore/CHANGES.md
@@ -1,5 +1,12 @@
 # Changes
 
+## [1.26.0](https://github.com/googleapis/google-cloud-go/compare/datastore/v1.25.0...datastore/v1.26.0) (2026-07-22)
+
+
+### Features
+
+* Update API sources and regenerate ([#20159](https://github.com/googleapis/google-cloud-go/issues/20159)) ([6395ba5](https://github.com/googleapis/google-cloud-go/commit/6395ba5d059d7e0d6ccfbf57b15d8d5ffcd70d0e))
+
 ## [1.25.0](https://github.com/googleapis/google-cloud-go/compare/datastore/v1.24.0...datastore/v1.25.0) (2026-07-14)
 
 
diff --git a/datastore/internal/version.go b/datastore/internal/version.go
index e414f80c43f7..78ff56a24439 100644
--- a/datastore/internal/version.go
+++ b/datastore/internal/version.go
@@ -17,4 +17,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "1.25.0"
+const Version = "1.26.0"
diff --git a/librarian.yaml b/librarian.yaml
index 6099d700fcc7..a466972fe534 100644
--- a/librarian.yaml
+++ b/librarian.yaml
@@ -615,7 +615,7 @@ libraries:
     apis:
       - path: google/cloud/dataqna/v1alpha
   - name: datastore
-    version: 1.25.0
+    version: 1.26.0
     apis:
       - path: google/datastore/v1
         go: