diff --git a/taiga/front/sitemaps/epics.py b/taiga/front/sitemaps/epics.py
index b7753345..84bd580c 100644
--- a/taiga/front/sitemaps/epics.py
+++ b/taiga/front/sitemaps/epics.py
@@ -54,7 +54,7 @@ class EpicsSitemap(Sitemap):
 
     def changefreq(self, obj):
         if (timezone.now() - obj.modified_date) > timedelta(days=90):
-            return "montly"
+            return "monthly"
         return "weekly"
 
     def priority(self, obj):
diff --git a/taiga/front/sitemaps/issues.py b/taiga/front/sitemaps/issues.py
index 34a2f482..c469bf37 100644
--- a/taiga/front/sitemaps/issues.py
+++ b/taiga/front/sitemaps/issues.py
@@ -51,7 +51,7 @@ class IssuesSitemap(Sitemap):
 
     def changefreq(self, obj):
         if (timezone.now() - obj.modified_date) > timedelta(days=90):
-            return "montly"
+            return "monthly"
         return "weekly"
 
     def priority(self, obj):
diff --git a/taiga/front/sitemaps/milestones.py b/taiga/front/sitemaps/milestones.py
index f373e692..add7bff9 100644
--- a/taiga/front/sitemaps/milestones.py
+++ b/taiga/front/sitemaps/milestones.py
@@ -55,7 +55,7 @@ class MilestonesSitemap(Sitemap):
 
     def changefreq(self, obj):
         if (timezone.now() - obj.modified_date) > timedelta(days=90):
-            return "montly"
+            return "monthly"
         return "weekly"
 
     def priority(self, obj):
diff --git a/taiga/front/sitemaps/projects.py b/taiga/front/sitemaps/projects.py
index 42e5dbfb..e3fb4ce3 100644
--- a/taiga/front/sitemaps/projects.py
+++ b/taiga/front/sitemaps/projects.py
@@ -51,7 +51,7 @@ class ProjectsSitemap(Sitemap):
 
     def changefreq(self, obj):
         if (timezone.now() - obj.modified_date) > timedelta(days=30):
-            return "montly"
+            return "monthly"
         return "daily"
 
     def priority(self, obj):
@@ -85,7 +85,7 @@ class ProjectBacklogsSitemap(Sitemap):
 
     def changefreq(self, obj):
         if (timezone.now() - obj.modified_date) > timedelta(days=90):
-            return "montly"
+            return "monthly"
         return "weekly"
 
     def priority(self, obj):
@@ -119,7 +119,7 @@ class ProjectKanbansSitemap(Sitemap):
 
     def changefreq(self, obj):
         if (timezone.now() - obj.modified_date) > timedelta(days=90):
-            return "montly"
+            return "monthly"
         return "weekly"
 
     def priority(self, obj):
diff --git a/taiga/front/sitemaps/tasks.py b/taiga/front/sitemaps/tasks.py
index d7faf410..c398b71e 100644
--- a/taiga/front/sitemaps/tasks.py
+++ b/taiga/front/sitemaps/tasks.py
@@ -51,7 +51,7 @@ class TasksSitemap(Sitemap):
 
     def changefreq(self, obj):
         if (timezone.now() - obj.modified_date) > timedelta(days=90):
-            return "montly"
+            return "monthly"
         return "weekly"
 
     def priority(self, obj):
diff --git a/taiga/front/sitemaps/userstories.py b/taiga/front/sitemaps/userstories.py
index e7a80216..c5e3663b 100644
--- a/taiga/front/sitemaps/userstories.py
+++ b/taiga/front/sitemaps/userstories.py
@@ -51,7 +51,7 @@ class UserStoriesSitemap(Sitemap):
 
     def changefreq(self, obj):
         if (timezone.now() - obj.modified_date) > timedelta(days=90):
-            return "montly"
+            return "monthly"
         return "weekly"
 
     def priority(self, obj):
diff --git a/taiga/front/sitemaps/wiki.py b/taiga/front/sitemaps/wiki.py
index 790d102a..fd29241b 100644
--- a/taiga/front/sitemaps/wiki.py
+++ b/taiga/front/sitemaps/wiki.py
@@ -54,7 +54,7 @@ class WikiPagesSitemap(Sitemap):
 
     def changefreq(self, obj):
         if (timezone.now() - obj.modified_date) > timedelta(days=90):
-            return "montly"
+            return "monthly"
         return "weekly"
 
     def priority(self, obj):