diff --git a/pyproject.toml b/pyproject.toml
index af3a75bf0..c40e9ab57 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -55,10 +55,30 @@ dependencies = [
     # Transitive dependencies that we need to limit for some reason
     "kiwisolver!=1.4.5", # matplotlib dep, 1.4.5 does not work when lazy-importing matplotlib
 ]
-# (1) Optional dependencies are made dynamic so that we can reuse them in tox. The goal is to have each
-# dependency and its version constraints specified only once to avoid inconsistencies.
-dynamic = ["optional-dependencies"]
 
+[project.optional-dependencies]
+docs = [
+    # Sphinx 7.2 dropped support for Python 3.8
+    "Sphinx>=7.1",
+    "sphinx-click>=5.0",
+]
+lint = [
+    "black>=22.1.0",
+    "pylint>=2.17",
+]
+test = [
+    "pytest>=7.4",
+    "pytest-cov>=4.1",
+    "tox>=4.9.0",
+]
+typing = [
+    "mypy>=1.5",
+    "mypy-extensions>=1.0",
+    "typing-extensions>=4.7",
+    "types-tabulate>=0.9",
+    "pandas-stubs>=2.0",
+    "nptyping>=2.5.0",
+]
 
 [project.urls]
 Repository = "https://github.com/tfiedor/perun.git"
diff --git a/requirements_docs.txt b/requirements_docs.txt
deleted file mode 100644
index 46277ec70..000000000
--- a/requirements_docs.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-# Sphinx 7.2 dropped support for Python 3.8
-Sphinx>=7.1
-sphinx-click>= 5.0
\ No newline at end of file
diff --git a/requirements_lint.txt b/requirements_lint.txt
deleted file mode 100644
index 500880d71..000000000
--- a/requirements_lint.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-pylint>=2.17
-black>=22.1.0
diff --git a/requirements_test.txt b/requirements_test.txt
deleted file mode 100644
index 390b04da4..000000000
--- a/requirements_test.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-pytest>=7.4
-pytest-cov>=4.1
-tox>=4.9.0
\ No newline at end of file
diff --git a/requirements_typing.txt b/requirements_typing.txt
deleted file mode 100644
index d5ffed461..000000000
--- a/requirements_typing.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-mypy>=1.5
-mypy-extensions>=1.0
-typing-extensions>=4.7
-types-tabulate>=0.9
-types-setuptools>=68.1.0.0
-pandas-stubs>=2.0
-nptyping>=2.5.0
\ No newline at end of file
diff --git a/tox.ini b/tox.ini
index 09f9ae5a9..146b581dc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,8 +16,7 @@ commands =
 
 [testenv:lint]
 description = Run code style checker Pylint
-skip_install = True
-deps = -r requirements_lint.txt
+extras = lint
 commands =
     pylint {posargs:perun}
 
@@ -25,14 +24,14 @@ commands =
 # We can't skip install as some of our dependencies ship type hints directly in their core package
 # and not as a standalone typeshed package.
 description = Run static type checker Mypy
-deps = -r requirements_typing.txt
+extras = typing
 commands =
     mypy {posargs:./perun}
 
 [testenv:docs]
 description = Generate Sphinx HTML documentation
 allowlist_externals = make
-deps = -r requirements_docs.txt
+extras = docs
 commands =
     make docs
 [pytest]