diff --git a/CHANGELOG b/CHANGELOG
index 5d3af6d..e2b82d2 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,7 +1,8 @@
 v0.3 (unreleased):
 
 - Added various new features to the WikiProjectTagger task.
-- Copyvio detector: improved sentence splitting algorithm.
+- Copyvio detector: improved sentence splitting algorithm; many performance
+  improvements.
 - Improved config file command/task exclusion logic.
 - IRC > !cidr: Added; new command for calculating range blocks.
 - IRC > !notes: Improved help and added aliases.
@@ -13,6 +14,8 @@ v0.3 (unreleased):
 - IRC: Try not to join channels before NickServ auth has completed.
 - IRC: Improved detection of maximum IRC message length.
 - IRC: Improved some help commands.
+- Wiki: Added logging for warnings.
+- Wiki: Updated some deprecated API calls.
 - Wiki: Fixed Page.toggle_talk() behavior on mainspace titles with colons.
 
 v0.2 (released November 8, 2015):
diff --git a/earwigbot/wiki/page.py b/earwigbot/wiki/page.py
index b05f9ff..302188f 100644
--- a/earwigbot/wiki/page.py
+++ b/earwigbot/wiki/page.py
@@ -264,13 +264,15 @@ class Page(CopyvioMixIn):
         if not result:
             query = self.site.api_query
             result = query(action="query", prop="revisions", rvlimit=1,
-                           rvprop="content|timestamp", titles=self._title)
+                           rvprop="content|timestamp", rvslots="main",
+                           titles=self._title)
 
         res = result["query"]["pages"].values()[0]
         try:
-            self._content = res["revisions"][0]["*"]
-            self._basetimestamp = res["revisions"][0]["timestamp"]
-        except KeyError:
+            revision = res["revisions"][0]
+            self._content = revision["slots"]["main"]["*"]
+            self._basetimestamp = revision["timestamp"]
+        except (KeyError, IndexError):
             # This can only happen if the page was deleted since we last called
             # self._load_attributes(). In that case, some of our attributes are
             # outdated, so force another self._load_attributes():
@@ -582,7 +584,7 @@ class Page(CopyvioMixIn):
             query = self.site.api_query
             result = query(action="query", rvlimit=1, titles=self._title,
                            prop="info|revisions", inprop="protection|url",
-                           rvprop="content|timestamp")
+                           rvprop="content|timestamp", rvslots="main")
             self._load_attributes(result=result)
             self._assert_existence()
             self._load_content(result=result)
diff --git a/earwigbot/wiki/site.py b/earwigbot/wiki/site.py
index 63c4fee..c93d940 100644
--- a/earwigbot/wiki/site.py
+++ b/earwigbot/wiki/site.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8  -*-
 #
-# Copyright (C) 2009-2017 Ben Kurtovic <ben.kurtovic@gmail.com>
+# Copyright (C) 2009-2019 Ben Kurtovic <ben.kurtovic@gmail.com>
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -298,6 +298,17 @@ class Site(object):
             e = "API query failed: JSON could not be decoded."
             raise exceptions.APIError(e)
 
+        if "warnings" in res:
+            for name, value in res["warnings"].items():
+                try:
+                    warning = value["warnings"]
+                except KeyError:
+                    try:
+                        warning = value["*"]
+                    except KeyError:
+                        warning = value
+                self._logger.warning("API warning: %s: %s", name, warning)
+
         try:
             code = res["error"]["code"]
             info = res["error"]["info"]