diff --git a/conda-recipe/meta.yaml b/conda-recipe/meta.yaml
index 5966a22..955250f 100644
--- a/conda-recipe/meta.yaml
+++ b/conda-recipe/meta.yaml
@@ -11,11 +11,11 @@ build:
 
 requirements:
   host:
-    - python
+    - python >=3.9.2
     - flit
 
   run:
-    - python
+    - python >=3.9.2
     - jinja2
     - ruamel.yaml >=0.15
     - matplotlib
diff --git a/pyproject.toml b/pyproject.toml
index 4065dea..f3c3764 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,10 +14,11 @@ classifiers = [
     "Topic :: Scientific/Engineering",
     "Topic :: Scientific/Engineering :: Physics",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.7"
+    "Programming Language :: Python :: 3.9"
 ]
 description-file="README.md"
 requires = [
+    "python>=3.9.2",
     "jinja2",
     "ruamel.yaml>=0.15",
     "matplotlib",