diff --git a/app/features/tournament/core/Standings.ts b/app/features/tournament/core/Standings.ts
index 6d35eac37..86f729569 100644
--- a/app/features/tournament/core/Standings.ts
+++ b/app/features/tournament/core/Standings.ts
@@ -3,7 +3,7 @@ import type { Standing } from "~/features/tournament-bracket/core/Bracket";
 import * as Progression from "~/features/tournament-bracket/core/Progression";
 import type { Tournament } from "~/features/tournament-bracket/core/Tournament";
 
-/** Calculates SPR (Seed Performance Rating) - see https://www.pgstats.com/articles/introducing-spr-and-uf */
+/** Calculates SPR (Seed Performance Rating) - see https://web.archive.org/web/20250513034545/https://www.pgstats.com/articles/introducing-spr-and-uf */
 export function calculateSPR({
 	standings,
 	teamId,
diff --git a/app/utils/urls.ts b/app/utils/urls.ts
index 595b0db15..e942766df 100644
--- a/app/utils/urls.ts
+++ b/app/utils/urls.ts
@@ -75,7 +75,7 @@ export const SPLATOON_3_INK = "https://splatoon3.ink/";
 export const RHODESMAS_FREESOUND_PROFILE_URL =
 	"https://freesound.org/people/rhodesmas/";
 export const SPR_INFO_URL =
-	"https://www.pgstats.com/articles/introducing-spr-and-uf";
+	"https://web.archive.org/web/20250513034545/https://www.pgstats.com/articles/introducing-spr-and-uf";
 
 export const bskyUrl = (accountName: string) =>
 	`https://bsky.app/profile/${accountName}`;