diff --git a/.travis.yml b/.travis.yml
index 8b2547a9..0df17bac 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@ os: linux
 dist: jammy
 language: python
 python:
+- "3.12"
 - "3.11"
 - "3.10"
 - "3.9.14"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index dfd7e442..d4b0e8b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [1.18.3](https://github.com/getappmap/appmap-python/compare/v1.18.2...v1.18.3) (2024-02-05)
+
+
+### Bug Fixes
+
+* support python 3.12 ([136b47b](https://github.com/getappmap/appmap-python/commit/136b47b14d390768fe8448f4649cdab838b70a92))
+
 ## [1.18.2](https://github.com/getappmap/appmap-python/compare/v1.18.1...v1.18.2) (2024-01-22)
 
 
diff --git a/_appmap/importer.py b/_appmap/importer.py
index 203da029..e1e1da36 100644
--- a/_appmap/importer.py
+++ b/_appmap/importer.py
@@ -89,7 +89,11 @@ def is_class(c):
     # bound to __class__. (For example, celery.local.Proxy uses this
     # mechanism to return the class of the proxied object.)
     #
-    return inspect._is_type(c)  # pylint: disable=protected-access
+    try:
+        inspect._static_getmro(c)  # pylint: disable=protected-access
+    except TypeError:
+        return False
+    return True
 
 
 def get_classes(module):
@@ -173,7 +177,6 @@ def instrument_functions(filterable, selected_functions=None):
             logger.debug("  functions %s", functions)
 
             for fn_name, static_fn, fn in functions:
-
                 # Only instrument the function if it was specifically called out for the package
                 # (e.g. because it should be labeled), or it's included by the filters
                 filterableFn = FilterableFn(filterable, fn, static_fn)
diff --git a/pyproject.toml b/pyproject.toml
index cc22bf39..dc34ca5c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "appmap"
-version = "1.18.2"
+version = "1.18.3"
 description = "Create AppMap files by recording a Python application."
 readme = "README.md"
 authors = [
@@ -53,12 +53,15 @@ packaging = ">=19.0"
 
 [tool.poetry.dev-dependencies]
 httpretty = "^1.0.5"
-pytest = "^6.1.2"
+pytest = "^7.3.2"
 pytest-randomly = "^3.5.0"
 pylint = "^2.6.0"
-pytest-django = "~ 4.5.2"
+pytest-django = [
+  { version = "~4.7", python = ">=3.8" },
+  { version = "<4.7", python = "3.7" }
+]
 flake8 = "^3.8.4"
-pyfakefs = "^4.3.2"
+pyfakefs = "^5.3.5"
 pprintpp = ">=0.4.0"
 coverage = "^5.3"
 pytest-mock = "^3.5.1"
diff --git a/requirements-dev.txt b/requirements-dev.txt
index a4c6a1f2..a8da3057 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,7 +1,5 @@
 #requirements-dev.txt
-pip
-poetry
 tox
 django
 flask
-pytest-django
\ No newline at end of file
+pytest-django<4.8
\ No newline at end of file
diff --git a/requirements-test.txt b/requirements-test.txt
index ccd9fa05..04392b28 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,2 +1,2 @@
 django ~= 3.2
-pytest-django
+pytest-django < 4.8
diff --git a/tox.ini b/tox.ini
index c230bb9d..4c47a9cd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 isolated_build = true
 # The *-web environments test the latest versions of Django and Flask with the full test suite. For
 # older version of the web frameworks, just run the tests that are specific to them.
-envlist = py3{8,9,10,11}-web, py3{7,8,9,10,11}-flask1-django3
+envlist = py3{8,9,10,11,12}-web, py3{7,8,9,10,11,12}-flask1-django3
 
 [testenv]
 allowlist_externals = 
@@ -10,7 +10,7 @@ allowlist_externals =
     poetry
 
 deps=
-    pytest-django >=4.5.2, <4.6
+    pytest-django <4.8
     web: Django >=4.0, <5.0
     web: Flask >= 2
     flask1: -rrequirements-flask1.txt