diff --git a/.github/workflows/doc_checks.yml b/.github/workflows/doc_checks.yml
index 704846b814..4d583db2f2 100644
--- a/.github/workflows/doc_checks.yml
+++ b/.github/workflows/doc_checks.yml
@@ -26,6 +26,11 @@ jobs:
     steps:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
+    - name: Update sphinx-rtd-theme
+      shell: bash -l {0}
+      run: |
+          pip install -U "sphinx-rtd-theme>=3.0.0"
+
     - name: Print versions
       shell: bash -l {0}
       run: |
diff --git a/docs/source/conf.py b/docs/source/conf.py
index bc0cf80801..5e8f52e8a2 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -9,8 +9,6 @@
 import sys
 from datetime import date
 
-import sphinx_rtd_theme
-
 sys.path.insert(0, os.path.abspath("."))
 sys.path.insert(0, os.path.abspath("_extensions"))
 
@@ -119,7 +117,7 @@
 html_theme_options = {
     "canonical_url": "https://proj.org",
     "logo_only": True,
-    "display_version": True,
+    "version_selector": True,
     "prev_next_buttons_location": "both",
     "style_external_links": False,
     "style_nav_header_background": "#353130",
@@ -131,9 +129,6 @@
     "titles_only": False,
 }
 
-# Add any paths that contain custom themes here, relative to this directory
-html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
-
 # Display "Edit on GitHub" link on each page
 # https://docs.readthedocs.io/en/stable/guides/edit-source-links-sphinx.html
 html_context = {
@@ -154,7 +149,7 @@
 # Add any paths that contain custom static files (such as style sheets)
 html_static_path = ["_static"]
 
-htm_css_files = [
+html_css_files = [
     "theme_overrides.css",  # override wide tables in RTD theme
 ]