diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7665a709edc1694b4e8d48d0190183d564c1f6cb
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+pysolar=0.10=pypi_0
diff --git a/setup.py b/setup.py
index 85e779e9cbcb6d6c965d43716cb38a754fdbb35e..405c8d821dadd457baa8cef08d34c5af71523634 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@ def read_requirements(fname):
 
 setuptools.setup(
     name="dartwrf",
-    version="2023.2.12",
+    version="2023.3.31",
     author="Lukas Kugler",
     author_email="lukas.kugler@univie.ac.at",
     description="Observing system simulation experiments with WRF and DART",
@@ -35,5 +35,5 @@ setuptools.setup(
         "Operating System :: OS Independent",
     ],
     python_requires=">=3.8.3",
-    install_requires=read_requirements("env-minimal.yml"),
+    install_requires="requirements.txt"),
 )