diff --git a/pyproject.toml b/pyproject.toml
index f9f22d43..6af4ce3f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,10 +34,10 @@ test = [
   "pytest"
 ]
 doc = [
-  "sphinx~=4.2",
-  "pydata-sphinx-theme~=0.11",
-  "readthedocs-sphinx-search~=0.1",
-  "m2r2~=0.3"
+  "sphinx",
+  "pydata-sphinx-theme",
+  "readthedocs-sphinx-search",
+  "m2r2"
 ]
 gcs = [
   "gcsfs>=2022.02"