diff --git a/CHANGELOG.md b/CHANGELOG.md
index f5e0ff82..c8a07aa0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ All notable changes to this project will be documented in this file.
 
 ### Added
 
-- Add support for OPA 1.12.2 ([#797]).
+- Add support for OPA 1.12.3 ([#797], [#805]).
 - Add support for OpenLDAP backend to user-info-fetcher ([#779]).
 - Bump testing-tools to `0.3.0-stackable0.0.0-dev` ([#793]).
 - Support objectOverrides using `.spec.objectOverrides`.
@@ -37,6 +37,7 @@ All notable changes to this project will be documented in this file.
 [#801]: https://github.com/stackabletech/opa-operator/pull/801
 [#803]: https://github.com/stackabletech/opa-operator/pull/803
 [#804]: https://github.com/stackabletech/opa-operator/pull/804
+[#805]: https://github.com/stackabletech/opa-operator/pull/805
 
 ## [25.11.0] - 2025-11-07
 
diff --git a/docs/modules/opa/examples/getting_started/opa.yaml b/docs/modules/opa/examples/getting_started/opa.yaml
index 3d39ad17..d486deaa 100644
--- a/docs/modules/opa/examples/getting_started/opa.yaml
+++ b/docs/modules/opa/examples/getting_started/opa.yaml
@@ -5,7 +5,7 @@ metadata:
   name: simple-opa
 spec:
   image:
-    productVersion: "1.12.2"
+    productVersion: "1.12.3"
   servers:
     roleGroups:
       default: {}
diff --git a/docs/modules/opa/partials/supported-versions.adoc b/docs/modules/opa/partials/supported-versions.adoc
index 9887cc9b..c6a9a932 100644
--- a/docs/modules/opa/partials/supported-versions.adoc
+++ b/docs/modules/opa/partials/supported-versions.adoc
@@ -2,5 +2,5 @@
 // This is a separate file, since it is used by both the direct OPA documentation, and the overarching
 // Stackable Platform documentation.
 
-* 1.12.2
+* 1.12.3
 * 1.8.0 (deprecated)
diff --git a/tests/test-definition.yaml b/tests/test-definition.yaml
index 0850d4fa..f28d0ca3 100644
--- a/tests/test-definition.yaml
+++ b/tests/test-definition.yaml
@@ -5,12 +5,12 @@ dimensions:
       # To use a custom image, add a comma and the full name after the product version
       # 0.67.1,oci.stackable.tech/sdp/opa:0.67.1-stackable0.0.0-dev
       - 1.8.0
-      - 1.12.2
+      - 1.12.3
   - name: opa-latest
     values:
       # To use a custom image, add a comma and the full name after the product version
       # 0.67.1,oci.stackable.tech/sdp/opa:0.67.1-stackable0.0.0-dev
-      - 1.12.2
+      - 1.12.3
   - name: keycloak
     values:
       - 23.0.1