diff --git a/.mike.yml b/.mike.yml
index 9557b23..2b986a4 100644
--- a/.mike.yml
+++ b/.mike.yml
@@ -2,6 +2,7 @@ version_selector: true
 title_switch: true
 versions_file: docs/versions/versions.json
 versions:
+  - 4.3.2
   - 4.3.1
   - 4.3.0
   - 4.2.0
@@ -18,4 +19,4 @@ versions:
   - 0.1.0
   - latest
 aliases:
-  latest: 4.3.1
+  latest: 4.3.2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 236158d..3db8474 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,17 @@ Changelog
 
 ___
 
+v4.3.2 (2026-09-26)
+-------------------
+
+Block response Content-Type, guard-core 4.1.0 tracking (v4.3.2)
+---------------------------------------------------------------
+
+- **Fixed** - Blocked responses now declare `Content-Type: text/plain` (#25): the Flask response factory left Flask's default mimetype in place, so middleware-generated 403/429/400 pages went out without an explicit content type and clients were left guessing. The factory now passes `mimetype="text/plain"`, matching the engine's reference response factory and the fastapi-guard fix (#144).
+- **Compatibility** - The `guard-core` floor moves from `>=4.0.0` to `>=4.1.0` in `pyproject.toml` (no upper bound), so this adapter tracks the guard-core 4.1.0 engine (the exempt_ips skip-list, the recon leading-separator gate, the raw-view recon scan, the cross-engine interop harness). The adapter delegates all security behavior to the engine through the unasync-generated sync mirror; no sync API flaskapi-guard uses changed shape.
+
+___
+
 v4.3.1 (2026-09-23)
 -------------------
 
diff --git a/docs/index.md b/docs/index.md
index 5c23020..d1a9116 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -106,7 +106,7 @@ You can also download the example app as a Docker container from [GitHub Contain
 docker pull ghcr.io/rennf93/flaskapi-guard-example:latest
 
 # Or pull a specific version (matches library releases)
-docker pull ghcr.io/rennf93/flaskapi-guard-example:v4.3.1
+docker pull ghcr.io/rennf93/flaskapi-guard-example:v4.3.2
 ```
 
 ___
diff --git a/docs/release-notes.md b/docs/release-notes.md
index e329357..5d1a4a7 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -3,6 +3,17 @@ Release Notes
 
 ___
 
+v4.3.2 (2026-09-26)
+-------------------
+
+Block response Content-Type, guard-core 4.1.0 tracking (v4.3.2)
+---------------------------------------------------------------
+
+- **Fixed** - Blocked responses now declare `Content-Type: text/plain` (#25): the Flask response factory left Flask's default mimetype in place, so middleware-generated 403/429/400 pages went out without an explicit content type and clients were left guessing. The factory now passes `mimetype="text/plain"`, matching the engine's reference response factory and the fastapi-guard fix (#144).
+- **Compatibility** - The `guard-core` floor moves from `>=4.0.0` to `>=4.1.0` in `pyproject.toml` (no upper bound), so this adapter tracks the guard-core 4.1.0 engine (the exempt_ips skip-list, the recon leading-separator gate, the raw-view recon scan, the cross-engine interop harness). The adapter delegates all security behavior to the engine through the unasync-generated sync mirror; no sync API flaskapi-guard uses changed shape.
+
+___
+
 v4.3.1 (2026-09-23)
 -------------------
 
diff --git a/docs/versions/versions.json b/docs/versions/versions.json
index 1ed07f9..a345bed 100644
--- a/docs/versions/versions.json
+++ b/docs/versions/versions.json
@@ -1,4 +1,6 @@
 {
+    "4.3.2": "4.3.2",
+    "latest": "4.3.2",
     "4.3.1": "4.3.1",
     "4.3.0": "4.3.0",
     "4.2.0": "4.2.0",
@@ -12,6 +14,5 @@
     "1.1.1": "1.1.1",
     "1.1.0": "1.1.0",
     "1.0.0": "1.0.0",
-    "0.1.0": "0.1.0",
-    "latest": "4.3.1"
+    "0.1.0": "0.1.0"
 }
diff --git a/flaskapi_guard/.agents/skills/flaskapi-guard/SKILL.md b/flaskapi_guard/.agents/skills/flaskapi-guard/SKILL.md
index 4cae9e1..a90fbc5 100644
--- a/flaskapi_guard/.agents/skills/flaskapi-guard/SKILL.md
+++ b/flaskapi_guard/.agents/skills/flaskapi-guard/SKILL.md
@@ -56,13 +56,16 @@ from flaskapi_guard import RouteConfig, SecurityDecorator
 
 security = SecurityDecorator()
 
+
 @app.route("/api/sensitive")
-@security.configure(RouteConfig(
-    rate_limit=5,
-    rate_limit_window=60,
-    require_https=True,
-    blocked_countries=["XX"],
-))
+@security.configure(
+    RouteConfig(
+        rate_limit=5,
+        rate_limit_window=60,
+        require_https=True,
+        blocked_countries=["XX"],
+    )
+)
 def sensitive_endpoint():
     return {"data": "restricted"}
 ```
diff --git a/pyproject.toml b/pyproject.toml
index 23b7338..0daaa59 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "flaskapi_guard"
-version = "4.3.1"
+version = "4.3.2"
 description = "A security library for Flask to control IPs, log requests, and detect penetration attempts."
 authors = [
     {name = "Renzo Franceschini", email = "rennf93@users.noreply.github.com"}
@@ -23,7 +23,7 @@ classifiers = [
 ]
 dependencies = [
     "flask",
-    "guard-core>=4.0.0",
+    "guard-core>=4.1.0",
     "gunicorn",
     "werkzeug",
 ]