diff --git a/apps/backend/src/build/strategy/strategies/ci/query.e2e.test.ts b/apps/backend/src/build/strategy/strategies/ci/query.e2e.test.ts
index aa3e27e6..ac6ea5dd 100644
--- a/apps/backend/src/build/strategy/strategies/ci/query.e2e.test.ts
+++ b/apps/backend/src/build/strategy/strategies/ci/query.e2e.test.ts
@@ -9,6 +9,7 @@ describe("#getBaseBucketForBuildAndCommit", () => {
   describe("when the build is triggered by a pull request", () => {
     let baseBucket: ScreenshotBucket;
     let build: Build;
+    let baseBucketBuild: Build;
 
     beforeEach(async () => {
       await setupDatabase();
@@ -29,10 +30,12 @@ describe("#getBaseBucketForBuildAndCommit", () => {
         {
           baseScreenshotBucketId: null,
           compareScreenshotBucketId: baseBucket.id,
-          jobStatus: "pending",
+          jobStatus: "complete",
           prHeadCommit: "766b744bc5fa27a330283dfd47ffafdaf905a941",
           name: "default",
           projectId: project.id,
+          type: "reference",
+          mode: "ci",
         },
         {
           baseScreenshotBucketId: null,
@@ -41,17 +44,75 @@ describe("#getBaseBucketForBuildAndCommit", () => {
           prHeadCommit: null,
           name: "default",
           projectId: project.id,
+          mode: "ci",
         },
       ]);
+      baseBucketBuild = builds[0]!;
       build = builds[1]!;
     });
 
-    it("returns the base bucket", async () => {
-      const result = await getBaseBucketForBuildAndCommit(
-        build,
-        "766b744bc5fa27a330283dfd47ffafdaf905a941",
-      );
-      expect(result).toEqual(baseBucket);
+    describe("if the associated build is pending", () => {
+      beforeEach(async () => {
+        await baseBucketBuild.$query().patch({ jobStatus: "pending" });
+      });
+
+      it("does not returns the bucket", async () => {
+        const result = await getBaseBucketForBuildAndCommit(
+          build,
+          "766b744bc5fa27a330283dfd47ffafdaf905a941",
+        );
+        expect(result).toBeNull();
+      });
+    });
+
+    describe("if the associated build is a type check without any diff", () => {
+      beforeEach(async () => {
+        await baseBucketBuild.$query().patch({ type: "check" });
+      });
+
+      it("does not returns the bucket", async () => {
+        const result = await getBaseBucketForBuildAndCommit(
+          build,
+          "766b744bc5fa27a330283dfd47ffafdaf905a941",
+        );
+        expect(result).toBeNull();
+      });
+    });
+
+    describe("if the associated build is a type check with unapproved diff", () => {
+      beforeEach(async () => {
+        await baseBucketBuild.$query().patch({ type: "check" });
+        await factory.ScreenshotDiff.create({
+          buildId: baseBucketBuild.id,
+          validationStatus: "rejected",
+        });
+      });
+
+      it("does not returns the bucket", async () => {
+        const result = await getBaseBucketForBuildAndCommit(
+          build,
+          "766b744bc5fa27a330283dfd47ffafdaf905a941",
+        );
+        expect(result).toBeNull();
+      });
+    });
+
+    describe("if the associated build is a type check with approved diff", () => {
+      beforeEach(async () => {
+        await baseBucketBuild.$query().patch({ type: "check" });
+        await factory.ScreenshotDiff.create({
+          buildId: baseBucketBuild.id,
+          validationStatus: "accepted",
+        });
+      });
+
+      it("returns the bucket", async () => {
+        const result = await getBaseBucketForBuildAndCommit(
+          build,
+          "766b744bc5fa27a330283dfd47ffafdaf905a941",
+        );
+        expect(result).toEqual(baseBucket);
+      });
     });
   });
 
@@ -78,7 +139,8 @@ describe("#getBaseBucketForBuildAndCommit", () => {
         {
           baseScreenshotBucketId: null,
           compareScreenshotBucketId: baseBucket.id,
-          jobStatus: "pending",
+          jobStatus: "complete",
+          type: "reference",
           prHeadCommit: null,
           name: "default",
           projectId: project.id,
diff --git a/apps/backend/src/build/strategy/strategies/ci/query.ts b/apps/backend/src/build/strategy/strategies/ci/query.ts
index 2e04af25..07ed4492 100644
--- a/apps/backend/src/build/strategy/strategies/ci/query.ts
+++ b/apps/backend/src/build/strategy/strategies/ci/query.ts
@@ -1,4 +1,8 @@
-import { Build, ScreenshotBucket } from "@/database/models/index.js";
+import {
+  Build,
+  ScreenshotBucket,
+  ScreenshotDiff,
+} from "@/database/models/index.js";
 
 /**
  * Get the base bucket for a build and a commit.
@@ -30,11 +34,32 @@ export async function getBaseBucketForBuildAndCommit(
  * Query the base bucket from a build.
  */
 export function queryBaseBucket(build: Build) {
-  return ScreenshotBucket.query().where({
-    projectId: build.projectId,
-    name: build.name,
-    complete: true,
-    valid: true,
-    mode: build.mode,
-  });
+  const approvedBuilds = Build.query()
+    .select("compareScreenshotBucketId")
+    .where("projectId", build.projectId)
+    .where("name", build.name)
+    .where("mode", build.mode)
+    .where("jobStatus", "complete")
+    .whereNot("id", build.id)
+    .where((qb) => {
+      // Reference build or check build with accepted diffs
+      qb.where("type", "reference").orWhere((qb) => {
+        qb.where("type", "check").whereExists(
+          ScreenshotDiff.query()
+            .select(1)
+            .whereRaw('"buildId" = builds.id')
+            .where("validationStatus", "accepted"),
+        );
+      });
+    });
+
+  return ScreenshotBucket.query()
+    .where({
+      projectId: build.projectId,
+      name: build.name,
+      complete: true,
+      valid: true,
+      mode: build.mode,
+    })
+    .whereIn("id", approvedBuilds);
 }