diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 3323809b9..a968b600b 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -7,7 +7,7 @@ version: 2
 
 # Set the version of Python and other tools you might need
 build:
-  os: ubuntu-20.04
+  os: ubuntu-24.04
   tools:
     python: "3.13" # let's use the default Python version provided by Read the Docs
     # You can also specify other tool versions:
diff --git a/docs/locales/ja/.readthedocs.yaml b/docs/locales/ja/.readthedocs.yaml
index b632226d9..608c3c0f8 100644
--- a/docs/locales/ja/.readthedocs.yaml
+++ b/docs/locales/ja/.readthedocs.yaml
@@ -7,7 +7,7 @@ version: 2
 
 # Set the version of Python and other tools you might need
 build:
-  os: ubuntu-20.04
+  os: ubuntu-24.04
   tools:
     python: "3.13"
     # You can also specify other tool versions:
diff --git a/docs/locales/ko/.readthedocs.yaml b/docs/locales/ko/.readthedocs.yaml
index d9b6c95a3..2944e3896 100644
--- a/docs/locales/ko/.readthedocs.yaml
+++ b/docs/locales/ko/.readthedocs.yaml
@@ -7,7 +7,7 @@ version: 2
 
 # Set the version of Python and other tools you might need
 build:
-  os: ubuntu-20.04
+  os: ubuntu-24.04
   tools:
     python: "3.13"
     # You can also specify other tool versions: