diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index a52c68a..f6353ce 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -10,7 +10,7 @@ jobs:
   build:
     strategy:
       matrix:
-        python_version: ["3.8", "3.9", "3.10", "3.11"]
+        python_version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
     runs-on: "ubuntu-latest"
     steps:
     - uses: actions/checkout@v3
diff --git a/pyproject.toml b/pyproject.toml
index 8e70ca6..65ebf55 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,6 +19,7 @@ classifiers = [
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
   "Topic :: Security",
   "License :: OSI Approved :: Apache Software License",
 ]
@@ -73,7 +74,7 @@ disallow_untyped_decorators = true
 no_implicit_optional = true
 no_implicit_reexport = true
 strict_equality = true
-strict_concatenate = true
+extra_checks = true
 
 [tool.ruff]
 src = ["src", "test"]
diff --git a/src/security_constraints/github_security_advisory.py b/src/security_constraints/github_security_advisory.py
index ed2903a..9b905d6 100644
--- a/src/security_constraints/github_security_advisory.py
+++ b/src/security_constraints/github_security_advisory.py
@@ -125,7 +125,6 @@ def get_vulnerabilities(
                 after = json_data["securityVulnerabilities"]["pageInfo"]["endCursor"]
             except KeyError as missing_key:
                 error_msg = f"Key {missing_key} not found in: {json_response}"
-                LOGGER.error(error_msg)
                 raise FetchVulnerabilitiesError(error_msg) from None
 
         return vulnerabilities
@@ -138,6 +137,8 @@ def _do_graphql_request(
             severities=",".join(sorted([str(severity) for severity in severities])),
             additional=f'after:"{after}"' if after is not None else "",
         )
+        LOGGER.debug("GraphQL query: %s", query)
+        LOGGER.debug("Sending request to %s", self.URL)
         response: requests.Response = self._session.post(
             url=self.URL,
             headers={"Authorization": f"bearer {self._token}"},
@@ -151,15 +152,17 @@ def _do_graphql_request(
                     f"Unexpected json data format in response: {json_content}"
                 )
         except requests.HTTPError as error:
-            LOGGER.error(
-                "HTTP error (status %s) received from URL %s: %s",
-                response.status_code,
-                self.URL,
-                error,
+            error_msg = (
+                "HTTP error (status {status}) received from URL {url}: {err}".format(
+                    status=response.status_code,
+                    url=self.URL,
+                    err=error,
+                )
             )
-            raise FetchVulnerabilitiesError from error
+            raise FetchVulnerabilitiesError(error_msg) from error
         except requests.JSONDecodeError as error:
-            LOGGER.error("Could not decode json data in response: %s", response.text)
-            raise FetchVulnerabilitiesError from error
+            error_msg = f"Could not decode json data in response: {response.text}"
+            raise FetchVulnerabilitiesError(error_msg) from error
         else:
+            LOGGER.debug("Request to %s was successful", self.URL)
             return json_content
diff --git a/src/security_constraints/main.py b/src/security_constraints/main.py
index cb7cfe3..12eaa7b 100644
--- a/src/security_constraints/main.py
+++ b/src/security_constraints/main.py
@@ -277,8 +277,8 @@ def main() -> int:
                 output.write(
                     f"{format_constraints_file_line(constraints, vulnerability)}\n"
                 )
-    except SecurityConstraintsError as error:
-        LOGGER.error(error)
+    except SecurityConstraintsError:
+        LOGGER.exception("Program exited with an exception.")
         return 1
     except Exception as error:
         LOGGER.critical(
diff --git a/tox.ini b/tox.ini
index fc18d01..c0c2a14 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py38,py39,py310,py311
+envlist = py38,py39,py310,py311,py312
 isolated_build = True
 minversion = 4.0.0
 
@@ -9,6 +9,7 @@ python =
     3.9: py39
     3.10: py310
     3.11: py311
+    3.12: py312
 
 [testenv]
 deps =