diff --git a/.github/workflows/validate-yaml-syntax.yaml b/.github/workflows/validate-yaml-syntax.yaml
index d6c438ff5..dfeb1a0cc 100644
--- a/.github/workflows/validate-yaml-syntax.yaml
+++ b/.github/workflows/validate-yaml-syntax.yaml
@@ -12,4 +12,4 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Validate YAML file
-        run: yamllint -c .yamllint-config linkml_model/model/schema/*.yaml
\ No newline at end of file
+        run: yamllint linkml_model/model/schema/*.yaml
\ No newline at end of file
diff --git a/.yamllint-config b/.yamllint.yaml
similarity index 100%
rename from .yamllint-config
rename to .yamllint.yaml
diff --git a/requirements-dev.txt b/requirements-dev.txt
deleted file mode 100644
index d739d0c97..000000000
--- a/requirements-dev.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-################################################################################
-# This requirements file has been automatically generated from `Pipfile` with
-# `pipenv-to-requirements`
-#
-#
-# This has been done to maintain backward compatibility with tools and services
-# that do not support `Pipfile` yet.
-#
-# Do NOT edit it directly, use `pipenv install [-d]` to modify `Pipfile` and
-# `Pipfile.lock` and then regenerate `requirements*.txt`.
-################################################################################
-
-linkml
-mkdocs
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index fabddb2bf..000000000
--- a/requirements.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-################################################################################
-# This requirements file has been automatically generated from `Pipfile` with
-# `pipenv-to-requirements`
-#
-#
-# This has been done to maintain backward compatibility with tools and services
-# that do not support `Pipfile` yet.
-#
-# Do NOT edit it directly, use `pipenv install [-d]` to modify `Pipfile` and
-# `Pipfile.lock` and then regenerate `requirements*.txt`.
-################################################################################
-
-linkml-runtime
-linkml>= 1.2.0
-mkdocs
-mkdocs-mermaid2-plugin