diff --git a/docs/docs_requirements.txt b/docs/docs_requirements.txt
index e32f9514..2d729bea 100644
--- a/docs/docs_requirements.txt
+++ b/docs/docs_requirements.txt
@@ -1,4 +1,4 @@
 # Duplicates the docs requirements in pyproject.toml, but is necessary for readthedocs (rtd does not allow to poetry install -E docs).
-sphinx
+sphinx>=5.0.0
 sphinx-rtd-theme>=0.5.1
 sphinxcontrib_bibtex
\ No newline at end of file
diff --git a/poetry.lock b/poetry.lock
index d813980f..67866327 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -3346,26 +3346,26 @@ files = [
 
 [[package]]
 name = "sphinx"
-version = "4.5.0"
+version = "5.3.0"
 description = "Python documentation generator"
 optional = true
 python-versions = ">=3.6"
 files = [
-    {file = "Sphinx-4.5.0-py3-none-any.whl", hash = "sha256:ebf612653238bcc8f4359627a9b7ce44ede6fdd75d9d30f68255c7383d3a6226"},
-    {file = "Sphinx-4.5.0.tar.gz", hash = "sha256:7bf8ca9637a4ee15af412d1a1d9689fec70523a68ca9bb9127c2f3eeb344e2e6"},
+    {file = "Sphinx-5.3.0.tar.gz", hash = "sha256:51026de0a9ff9fc13c05d74913ad66047e104f56a129ff73e174eb5c3ee794b5"},
+    {file = "sphinx-5.3.0-py3-none-any.whl", hash = "sha256:060ca5c9f7ba57a08a1219e547b269fadf125ae25b06b9fa7f66768efb652d6d"},
 ]
 
 [package.dependencies]
 alabaster = ">=0.7,<0.8"
-babel = ">=1.3"
-colorama = {version = ">=0.3.5", markers = "sys_platform == \"win32\""}
-docutils = ">=0.14,<0.18"
-imagesize = "*"
-Jinja2 = ">=2.3"
-packaging = "*"
-Pygments = ">=2.0"
+babel = ">=2.9"
+colorama = {version = ">=0.4.5", markers = "sys_platform == \"win32\""}
+docutils = ">=0.14,<0.20"
+imagesize = ">=1.3"
+Jinja2 = ">=3.0"
+packaging = ">=21.0"
+Pygments = ">=2.12"
 requests = ">=2.5.0"
-snowballstemmer = ">=1.1"
+snowballstemmer = ">=2.0"
 sphinxcontrib-applehelp = "*"
 sphinxcontrib-devhelp = "*"
 sphinxcontrib-htmlhelp = ">=2.0.0"
@@ -3375,8 +3375,8 @@ sphinxcontrib-serializinghtml = ">=1.1.5"
 
 [package.extras]
 docs = ["sphinxcontrib-websupport"]
-lint = ["docutils-stubs", "flake8 (>=3.5.0)", "isort", "mypy (>=0.931)", "types-requests", "types-typed-ast"]
-test = ["cython", "html5lib", "pytest", "pytest-cov", "typed-ast"]
+lint = ["docutils-stubs", "flake8 (>=3.5.0)", "flake8-bugbear", "flake8-comprehensions", "flake8-simplify", "isort", "mypy (>=0.981)", "sphinx-lint", "types-requests", "types-typed-ast"]
+test = ["cython", "html5lib", "pytest (>=4.6)", "typed_ast"]
 
 [[package]]
 name = "sphinx-rtd-theme"
@@ -4004,4 +4004,4 @@ preprocessing = ["geopandas"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.10, <3.11"
-content-hash = "002cb501ea89ecf1d859372ea7f49d45a6d24ba535d8b8254f6844c4816d0cc2"
+content-hash = "35bb03435de68d13e8d111d110bf880c5f71d7582f82aed2b165c665d8a508f7"
diff --git a/pyproject.toml b/pyproject.toml
index 6b4c4e23..6cfa68c6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ pyyaml = ">=6.0"
 dynaconf = "^3.1.7"
 snakemake = ">=5"
 oemoflex = {git = "https://github.com/rl-institut/oemoflex.git", rev = "0.0.3"}
-Sphinx = {version = "^4.3.2", optional = true}
+Sphinx = {version = ">=5.0", optional = true}
 sphinx-rtd-theme = {version = "^1.0.0", optional = true}
 sphinxcontrib-bibtex = {version = "^2.4.1", optional = true}
 docutils = "^0.17"