diff --git a/README.rst b/README.rst
index 8486c9190..f62980cf6 100644
--- a/README.rst
+++ b/README.rst
@@ -79,6 +79,11 @@ in development
   for valid types extending ``typing.Generic`` as well as other generic classes.
 
 
+pydoctor 24.11.2
+^^^^^^^^^^^^^^^^
+
+* Replace deprecated usage of ``datetime.datetime.utcfromtimestamp()``
+
 pydoctor 24.11.1
 ^^^^^^^^^^^^^^^^
 
diff --git a/pydoctor/driver.py b/pydoctor/driver.py
index 221d7de52..a396ff3f5 100644
--- a/pydoctor/driver.py
+++ b/pydoctor/driver.py
@@ -35,8 +35,8 @@ def get_system(options: model.Options) -> model.System:
     # Support source date epoch:
     # https://reproducible-builds.org/specs/source-date-epoch/
     try:
-        system.buildtime = datetime.datetime.utcfromtimestamp(
-            int(os.environ['SOURCE_DATE_EPOCH']))
+        system.buildtime = datetime.datetime.fromtimestamp(
+            int(os.environ['SOURCE_DATE_EPOCH']), datetime.UTC)
     except ValueError as e:
         error(str(e))
     except KeyError:
diff --git a/readthedocs.yml b/readthedocs.yml
index 1a1beb95b..4c4644631 100644
--- a/readthedocs.yml
+++ b/readthedocs.yml
@@ -2,6 +2,7 @@
 version: 2
 
 sphinx:
+  configuration: docs/source/conf.py
   fail_on_warning: false
 
 build: