diff --git a/src/scicookie/{{cookiecutter.project_slug}}/.gitignore b/src/scicookie/{{cookiecutter.project_slug}}/.gitignore
index 286bd870..4b5a864c 100644
--- a/src/scicookie/{{cookiecutter.project_slug}}/.gitignore
+++ b/src/scicookie/{{cookiecutter.project_slug}}/.gitignore
@@ -98,8 +98,10 @@ docs/_build/
 docs/_templates/
 {%+ endif %}
 
+{%- if cookiecutter.use_mypy == "yes" %}
 # mypy
 .mypy_cache/
+{%- endif %}
 
 # IDE settings
 .vscode/
diff --git a/src/scicookie/{{cookiecutter.project_slug}}/conda/dev.yaml b/src/scicookie/{{cookiecutter.project_slug}}/conda/dev.yaml
index cf313282..b3d853aa 100644
--- a/src/scicookie/{{cookiecutter.project_slug}}/conda/dev.yaml
+++ b/src/scicookie/{{cookiecutter.project_slug}}/conda/dev.yaml
@@ -26,3 +26,6 @@ dependencies:
 {%- if cookiecutter.documentation_engine == "sphinx" %}
   - pandoc
 {%- endif %}
+{%- if cookiecutter.use_mypy == "yes" %}
+  - mypy
+{%- endif %}
diff --git a/src/scicookie/{{cookiecutter.project_slug}}/{{cookiecutter.package_slug}}/__init__.py b/src/scicookie/{{cookiecutter.project_slug}}/{{cookiecutter.package_slug}}/__init__.py
index 7012692b..dc1f753e 100644
--- a/src/scicookie/{{cookiecutter.project_slug}}/{{cookiecutter.package_slug}}/__init__.py
+++ b/src/scicookie/{{cookiecutter.project_slug}}/{{cookiecutter.package_slug}}/__init__.py
@@ -1,4 +1,6 @@
+{%- if cookiecutter.use_mypy == "yes" %}
 # mypy: disable-error-code="attr-defined"
+{%- endif %}
 """{{ cookiecutter.project_name }}."""
 {%- if cookiecutter.use_blue == "yes" %}
   {%- set QUOTE = "'" -%}