diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index c06f1208..f90496f3 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -5,7 +5,7 @@ version: 2
 build:
   os: ubuntu-24.04
   tools:
-    python: "3.14"
+    python: "3.15"
   jobs:
     pre_create_environment:
       - asdf plugin add uv
diff --git a/docs/pyproject.toml b/docs/pyproject.toml
index c269137d..f7d177ce 100644
--- a/docs/pyproject.toml
+++ b/docs/pyproject.toml
@@ -3,7 +3,7 @@ name = "docs"
 version = "7"
 description = "Firebase Admin SDK for PHP Documentation"
 readme = "README.md"
-requires-python = ">=3.14"
+requires-python = ">=3.15"
 dependencies = [
     "furo>=2025.12.19,<2026",
     "linkify-it-py>=2.1.0,<3",