diff --git a/packages/pl-api/lib/features.ts b/packages/pl-api/lib/features.ts
index fea3e7a2a..d2d185e7c 100644
--- a/packages/pl-api/lib/features.ts
+++ b/packages/pl-api/lib/features.ts
@@ -878,6 +878,8 @@ const getFeatures = (instance: Instance) => {
       v.software === MASTODON,
     ]),
 
+    filtersV2BlurAction: v.software === MASTODON && gte(v.version, '4.4.0'),
+
     /**
      * Allows setting the focal point of a media attachment.
      * @see {@link https://docs.joinmastodon.org/methods/media/}
diff --git a/packages/pl-api/lib/params/filtering.ts b/packages/pl-api/lib/params/filtering.ts
index 3fa4e1bfa..599a1eab9 100644
--- a/packages/pl-api/lib/params/filtering.ts
+++ b/packages/pl-api/lib/params/filtering.ts
@@ -36,7 +36,7 @@ type FilterContext = 'home' | 'notifications' | 'public' | 'thread' | 'account';
 interface CreateFilterParams {
   title: string;
   context: Array<FilterContext>;
-  filter_action?: 'warn' | 'hide';
+  filter_action?: 'warn' | 'hide' | 'blur';
   expires_in?: number;
   keywords_attributes: Array<{
     keyword: string;
@@ -50,7 +50,7 @@ interface CreateFilterParams {
 interface UpdateFilterParams {
   title?: string;
   context?: Array<FilterContext>;
-  filter_action?: 'warn' | 'hide';
+  filter_action?: 'warn' | 'hide' | 'blur';
   expires_in?: number;
   keywords_attributes?: Array<{
     keyword: string;