diff --git a/requirements.in b/requirements.in
index cba0f877..a9f7d46d 100644
--- a/requirements.in
+++ b/requirements.in
@@ -9,7 +9,7 @@ geode-simplex
 geode-explicit
 geode-implicit
 geode-common
-jsonschema
+fastjsonschema
 Flask[async]
 Flask-Cors
 werkzeug
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index f60c72a2..4260add6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,6 +14,8 @@ blinker==1.9.0
     # via flask
 click==8.2.1
     # via flask
+fastjsonschema==2.21.1
+# via -r requirements.in
 flask[async]==3.1.1
     # via
     #   -r requirements.in
@@ -60,10 +62,6 @@ itsdangerous==2.2.0
     # via flask
 jinja2==3.1.6
     # via flask
-jsonschema==4.24.0
-    # via -r requirements.in
-jsonschema-specifications==2025.4.1
-    # via jsonschema
 markupsafe==3.0.2
     # via
     #   flask
@@ -120,4 +118,4 @@ werkzeug==3.1.3
     # via
     #   -r requirements.in
     #   flask
-    #   flask-cors
+    #   flask-cors
\ No newline at end of file
diff --git a/src/opengeodeweb_back/test_utils.py b/src/opengeodeweb_back/test_utils.py
index 0d4c6176..0888a4ad 100644
--- a/src/opengeodeweb_back/test_utils.py
+++ b/src/opengeodeweb_back/test_utils.py
@@ -12,14 +12,13 @@ def test_route_wrong_params(client, route, get_full_data):
         response = client.post(route, json=json)
         assert response.status_code == 400
         error_description = response.json["description"]
-        assert error_description == f"Validation error: '{key}' is a required property"
+        assert "data must contain" in error_description
+        assert f"'{key}'" in error_description
 
     json = get_full_data()
     json["dumb_key"] = "dumb_value"
     response = client.post(route, json=json)
     assert response.status_code == 400
     error_description = response.json["description"]
-    assert (
-        error_description
-        == "Validation error: Additional properties are not allowed ('dumb_key' was unexpected)"
-    )
+    assert "data must not contain" in error_description
+    assert "'dumb_key'" in error_description
diff --git a/src/opengeodeweb_back/utils_functions.py b/src/opengeodeweb_back/utils_functions.py
index 183d40de..1b12cebd 100644
--- a/src/opengeodeweb_back/utils_functions.py
+++ b/src/opengeodeweb_back/utils_functions.py
@@ -6,8 +6,7 @@
 
 # Third party imports
 import flask
-from jsonschema import validate
-from jsonschema.exceptions import ValidationError
+import fastjsonschema
 import importlib.metadata as metadata
 
 # Local application imports
@@ -82,9 +81,11 @@ def validate_request(request, schema):
         json_data = {}
 
     try:
-        validate(instance=json_data, schema=schema)
-    except ValidationError as e:
-        flask.abort(400, f"Validation error: {e.message}")
+        validate = fastjsonschema.compile(schema)
+        validate(json_data)
+    except fastjsonschema.JsonSchemaException as e:
+        error_msg = str(e)
+        flask.abort(400, error_msg)
 
 
 def set_interval(func, sec, args=None):