diff --git a/qt/aqt/mediasrv.py b/qt/aqt/mediasrv.py
index c58c19747..d50168d2a 100644
--- a/qt/aqt/mediasrv.py
+++ b/qt/aqt/mediasrv.py
@@ -19,6 +19,7 @@ from flask import Response, request
 from waitress.server import create_server
 
 import aqt
+import anki.backend_pb2 as pb
 from anki import hooks
 from anki.rsbackend import from_json_bytes
 from anki.utils import devMode
@@ -259,6 +260,18 @@ def graph_preferences() -> bytes:
     return aqt.mw.col.backend.graphs_preferences()
 
 
+def set_graph_preferences() -> bytes:
+    data = from_json_bytes(request.data)
+
+    underscore_data = {
+        "calendar_first_day_of_week": data["calendarFirstDayOfWeek"],
+        "card_counts_separate_inactive": data["cardCountsSeparateInactive"],
+    }
+
+    data = pb.GraphsPreferencesOut(**underscore_data)
+    return aqt.mw.col.backend.set_graphs_preferences(input=data)
+
+
 def congrats_info() -> bytes:
     info = aqt.mw.col.backend.congrats_info()
     return info.SerializeToString()
@@ -267,6 +280,7 @@ def congrats_info() -> bytes:
 post_handlers = dict(
     graphData=graph_data,
     graphPreferences=graph_preferences,
+    setGraphPreferences=set_graph_preferences,
     # pylint: disable=unnecessary-lambda
     i18nResources=lambda: aqt.mw.col.backend.i18n_resources(),
     congratsInfo=congrats_info,
diff --git a/rslib/backend.proto b/rslib/backend.proto
index 60a81eec9..2e6a9a0a3 100644
--- a/rslib/backend.proto
+++ b/rslib/backend.proto
@@ -117,6 +117,7 @@ service BackendService {
   rpc CardStats(CardID) returns (String);
   rpc Graphs(GraphsIn) returns (GraphsOut);
   rpc GraphsPreferences(Empty) returns (GraphsPreferencesOut);
+  rpc SetGraphsPreferences(GraphsPreferencesOut) returns (Empty);
 
   // media
 
diff --git a/rslib/src/backend/mod.rs b/rslib/src/backend/mod.rs
index 17ef064d3..3444f8358 100644
--- a/rslib/src/backend/mod.rs
+++ b/rslib/src/backend/mod.rs
@@ -680,6 +680,11 @@ impl BackendService for Backend {
         self.with_col(|col| col.graphs_preferences())
     }
 
+    fn set_graphs_preferences(&self, input: pb::GraphsPreferencesOut) -> BackendResult<Empty> {
+        self.with_col(|col| col.set_graphs_preferences(input))
+            .map(Into::into)
+    }
+
     // decks
     //-----------------------------------------------
 
diff --git a/rslib/src/stats/graphs.rs b/rslib/src/stats/graphs.rs
index 3e0fbff64..eeddf68fd 100644
--- a/rslib/src/stats/graphs.rs
+++ b/rslib/src/stats/graphs.rs
@@ -52,6 +52,11 @@ impl Collection {
             card_counts_separate_inactive: true,
         })
     }
+
+    pub(crate) fn set_graphs_preferences(&self, prefs: pb::GraphsPreferencesOut) -> Result<()> {
+        // self.set_first_weekday(prefs.calendar_first_day_of_week);
+        Ok(())
+    }
 }
 
 impl From<RevlogEntry> for pb::RevlogEntry {
diff --git a/ts/graphs/graph-helpers.ts b/ts/graphs/graph-helpers.ts
index 9e94fdbf8..546f0816e 100644
--- a/ts/graphs/graph-helpers.ts
+++ b/ts/graphs/graph-helpers.ts
@@ -25,6 +25,12 @@ export async function getGraphPreferences(): Promise<pb.BackendProto.GraphsPrefe
     );
 }
 
+export async function setGraphPreferences(prefs: pb.BackendProto.GraphsPreferencesOut): Promise<void> {
+    return (async () => {
+        await postRequest("/_anki/setGraphPreferences", JSON.stringify({ ...prefs }))
+    })()
+}
+
 // amount of data to fetch from backend
 export enum RevlogRange {
     Year = 1,
diff --git a/ts/graphs/preferences.ts b/ts/graphs/preferences.ts
index cc3109fc5..8906cced5 100644
--- a/ts/graphs/preferences.ts
+++ b/ts/graphs/preferences.ts
@@ -1,6 +1,7 @@
-import { getGraphPreferences } from "./graph-helpers";
-import { writable, get } from "svelte/store";
 import type pb from "anki/backend_proto";
+import { getGraphPreferences, setGraphPreferences } from "./graph-helpers";
+import { writable, get } from "svelte/store";
+
 
 export interface CustomStore<T> {
     subscribe: (getter: (value: T) => void) => () => void;
@@ -28,10 +29,7 @@ function createPreference<T>(
     };
 }
 
-function preparePreferences(
-    graphsPreferences: pb.BackendProto.GraphsPreferencesOut,
-    save: (prefs: pb.BackendProto.GraphsPreferencesOut) => void
-): PreferenceStore {
+function preparePreferences(graphsPreferences: pb.BackendProto.GraphsPreferencesOut): PreferenceStore {
     const preferences: Partial<PreferenceStore> = {};
 
     function constructPreferences(): pb.BackendProto.GraphsPreferencesOut {
@@ -43,8 +41,7 @@ function preparePreferences(
     }
 
     function savePreferences(): void {
-        const preferences = constructPreferences();
-        save(preferences);
+        setGraphPreferences(constructPreferences());
     }
 
     for (const [key, value] of Object.entries(graphsPreferences)) {
@@ -56,8 +53,5 @@ function preparePreferences(
 
 export async function getPreferences() {
     const initialPreferences = await getGraphPreferences();
-
-    return preparePreferences(initialPreferences, (prefs) => {
-        console.log("preferences to save", prefs);
-    });
+    return preparePreferences(initialPreferences)
 }