diff --git a/openthread_border_router/CHANGELOG.md b/openthread_border_router/CHANGELOG.md
index 2885b454e..a01692f48 100644
--- a/openthread_border_router/CHANGELOG.md
+++ b/openthread_border_router/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 3.1.1
+
+- Bump beta to OTBR POSIX version d83ddc62 to test ePSKc / Thread 1.4 Credentials Sharing support ahead of the upstream `release-v2026.09.0` tag
+
 ## 3.1.0
 
 - Bump to OTBR POSIX version ec16e396 (tag v2026.07.0)
diff --git a/openthread_border_router/build.yaml b/openthread_border_router/build.yaml
index 170158af7..c51ded6a4 100644
--- a/openthread_border_router/build.yaml
+++ b/openthread_border_router/build.yaml
@@ -3,7 +3,7 @@ build_from:
   aarch64: ghcr.io/home-assistant/aarch64-base-debian:trixie
   amd64: ghcr.io/home-assistant/amd64-base-debian:trixie
 args:
-  OTBR_BETA_VERSION: 337711e7038d0b9c8fb46a1ce888ce7f9c4c0c35
+  OTBR_BETA_VERSION: d83ddc62ecbb3d8a766ce3f1c58d6362d793d70b
   OTBR_VERSION: ec16e396382b4559e70a2c6fdeecb7d596a5e915
   UNIVERSAL_SILABS_FLASHER_VERSION: 0.1.2
   SERIALX_VERSION: 1.8.0
diff --git a/openthread_border_router/config.yaml b/openthread_border_router/config.yaml
index e0259eb02..cf5038cdf 100644
--- a/openthread_border_router/config.yaml
+++ b/openthread_border_router/config.yaml
@@ -1,5 +1,5 @@
 ---
-version: 3.1.0
+version: 3.1.1
 breaking_versions: [3.0.0]
 slug: openthread_border_router
 name: OpenThread Border Router