diff --git a/requirements-dev.in b/requirements-dev.in
new file mode 100644
index 00000000..565ddb2e
--- /dev/null
+++ b/requirements-dev.in
@@ -0,0 +1,8 @@
+-r requirements.txt
+bottle~=0.13.0
+pytest~=8.3.0
+# pytest-cov 2.6.0 has increased the version requirement 
+# for the coverage package from >=3.7.1 to >=4.4, 
+# which is in conflict with the version requirement 
+# defined by the python-coveralls package for coverage==4.0.3
+pytest-cov~=2.5.0
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 56806d35..dc541d1a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,8 +1,28 @@
--r requirements.txt
-bottle
-pytest
-# pytest-cov 2.6.0 has increased the version requirement 
-# for the coverage package from >=3.7.1 to >=4.4, 
-# which is in conflict with the version requirement 
-# defined by the python-coveralls package for coverage==4.0.3
-pytest-cov>=2.4.0,<2.6
+#
+# This file is autogenerated by pip-compile with Python 3.9
+# by the following command:
+#
+#    pip-compile --output-file=requirements-dev.txt requirements-dev.in
+#
+backports-datetime-fromisoformat==2.0.2 ; python_version < "3.11"
+    # via -r requirements.txt
+bottle==0.13.2
+    # via -r requirements-dev.in
+coverage==7.6.9
+    # via pytest-cov
+exceptiongroup==1.2.2
+    # via pytest
+iniconfig==2.0.0
+    # via pytest
+packaging==24.2
+    # via pytest
+pluggy==1.5.0
+    # via pytest
+pytest==8.3.4
+    # via
+    #   -r requirements-dev.in
+    #   pytest-cov
+pytest-cov==2.5.1
+    # via -r requirements-dev.in
+tomli==2.2.1
+    # via pytest
diff --git a/requirements.in b/requirements.in
new file mode 100644
index 00000000..c785d132
--- /dev/null
+++ b/requirements.in
@@ -0,0 +1 @@
+backports-datetime-fromisoformat; python_version < '3.11'
diff --git a/requirements.txt b/requirements.txt
index c785d132..3870cb86 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,8 @@
-backports-datetime-fromisoformat; python_version < '3.11'
+#
+# This file is autogenerated by pip-compile with Python 3.9
+# by the following command:
+#
+#    pip-compile --output-file=requirements.txt requirements.in
+#
+backports-datetime-fromisoformat==2.0.2 ; python_version < "3.11"
+    # via -r requirements.in