diff --git a/conda-envs/environment-dev.yml b/conda-envs/environment-dev.yml
index 85e6694a95..d0e634c2ee 100644
--- a/conda-envs/environment-dev.yml
+++ b/conda-envs/environment-dev.yml
@@ -37,7 +37,7 @@ dependencies:
 - watermark
 - polyagamma
 - sphinx-remove-toctrees
-- mypy=1.5.1
+- mypy=1.11.2
 - types-cachetools
 - pip:
   - git+https://github.com/pymc-devs/pymc-sphinx-theme
diff --git a/conda-envs/environment-jax.yml b/conda-envs/environment-jax.yml
index 97d25dd5b8..639f641eeb 100644
--- a/conda-envs/environment-jax.yml
+++ b/conda-envs/environment-jax.yml
@@ -33,7 +33,7 @@ dependencies:
 - pre-commit>=2.8.0
 - pytest-cov>=2.5
 - pytest>=3.0
-- mypy=1.5.1
+- mypy=1.11.2
 - types-cachetools
 - pip:
   - numdifftools>=0.9.40
diff --git a/conda-envs/environment-test.yml b/conda-envs/environment-test.yml
index 58cde0d327..c319bab0d9 100644
--- a/conda-envs/environment-test.yml
+++ b/conda-envs/environment-test.yml
@@ -28,7 +28,7 @@ dependencies:
 - pre-commit>=2.8.0
 - pytest-cov>=2.5
 - pytest>=3.0
-- mypy=1.5.1
+- mypy=1.11.2
 - types-cachetools
 - pip:
   - numdifftools>=0.9.40
diff --git a/conda-envs/windows-environment-dev.yml b/conda-envs/windows-environment-dev.yml
index 6d785e2cac..bdc01369cd 100644
--- a/conda-envs/windows-environment-dev.yml
+++ b/conda-envs/windows-environment-dev.yml
@@ -34,7 +34,7 @@ dependencies:
 - sphinx>=1.5
 - watermark
 - sphinx-remove-toctrees
-- mypy=1.5.1
+- mypy=1.11.2
 - types-cachetools
 - pip:
   - git+https://github.com/pymc-devs/pymc-sphinx-theme
diff --git a/conda-envs/windows-environment-test.yml b/conda-envs/windows-environment-test.yml
index fd17c31711..85d86214bf 100644
--- a/conda-envs/windows-environment-test.yml
+++ b/conda-envs/windows-environment-test.yml
@@ -28,7 +28,7 @@ dependencies:
 - pre-commit>=2.8.0
 - pytest-cov>=2.5
 - pytest>=3.0
-- mypy=1.5.1
+- mypy=1.11.2
 - types-cachetools
 - pip:
   - numdifftools>=0.9.40
diff --git a/pymc/backends/__init__.py b/pymc/backends/__init__.py
index aea1c57b8c..29a76ec27c 100644
--- a/pymc/backends/__init__.py
+++ b/pymc/backends/__init__.py
@@ -85,7 +85,7 @@
     RunType: TypeAlias = Run
     HAS_MCB = True
 except ImportError:
-    TraceOrBackend = BaseTrace  # type: ignore[misc]
+    TraceOrBackend = BaseTrace  # type: ignore[assignment, misc]
     RunType = type(None)  # type: ignore[assignment, misc]
 
 
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 082eab73ce..26d8ec8fee 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -9,7 +9,7 @@ h5py>=2.7
 ipython>=7.16
 jupyter-sphinx
 mcbackend>=0.4.0
-mypy==1.5.1
+mypy==1.11.2
 myst-nb<=1.0.0
 numdifftools>=0.9.40
 numpy>=1.15.0