diff --git a/browser/base/content/test/protectionsUI/browser_protectionsUI_cookies_subview.js b/browser/base/content/test/protectionsUI/browser_protectionsUI_cookies_subview.js
index 1346fb94c1d3..4866bfff0b48 100644
--- a/browser/base/content/test/protectionsUI/browser_protectionsUI_cookies_subview.js
+++ b/browser/base/content/test/protectionsUI/browser_protectionsUI_cookies_subview.js
@@ -369,6 +369,10 @@ add_task(async function testCookiesSubViewAllowedHeuristic() {
     TPC_PREF,
     Ci.nsICookieService.BEHAVIOR_REJECT_TRACKER
   );
+  Services.prefs.setBoolPref(
+    "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+    false
+  );
   let principal =
     Services.scriptSecurityManager.createContentPrincipalFromOrigin(
       // eslint-disable-next-line @microsoft/sdl/no-insecure-url
@@ -474,6 +478,9 @@ add_task(async function testCookiesSubViewAllowedHeuristic() {
   BrowserTestUtils.removeTab(tab);
 
   Services.prefs.clearUserPref(TPC_PREF);
+  Services.prefs.clearUserPref(
+    "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers"
+  );
 });
 
 add_task(async function testCookiesSubViewBlockedDoublyNested() {
diff --git a/toolkit/components/antitracking/test/browser/antitracking_head.js b/toolkit/components/antitracking/test/browser/antitracking_head.js
index b71fc79ce0d1..420a50d9e36a 100644
--- a/toolkit/components/antitracking/test/browser/antitracking_head.js
+++ b/toolkit/components/antitracking/test/browser/antitracking_head.js
@@ -988,6 +988,15 @@ this.AntiTracking = {
         await TestUtils.topicObserved("browser-delayed-startup-finished");
       }
 
+      // Enable SA heuristics for trackers because the test depends on it.
+      extraPrefs = [
+        ...(extraPrefs || []),
+        [
+          "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+          false,
+        ],
+      ];
+
       await AntiTracking._setupTest(
         win,
         cookieBehavior,
@@ -1114,6 +1123,15 @@ this.AntiTracking = {
         await TestUtils.topicObserved("browser-delayed-startup-finished");
       }
 
+      // Enable SA heuristics for trackers because the test depends on it.
+      extraPrefs = [
+        ...(extraPrefs || []),
+        [
+          "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+          false,
+        ],
+      ];
+
       await AntiTracking._setupTest(
         win,
         cookieBehavior,
diff --git a/toolkit/components/antitracking/test/browser/browser_contentBlockingTelemetry.js b/toolkit/components/antitracking/test/browser/browser_contentBlockingTelemetry.js
index 3ff7137bdde7..a1e8748d4046 100644
--- a/toolkit/components/antitracking/test/browser/browser_contentBlockingTelemetry.js
+++ b/toolkit/components/antitracking/test/browser/browser_contentBlockingTelemetry.js
@@ -143,6 +143,11 @@ add_setup(async function () {
       // telemetry too soon.
       ["privacy.restrict3rdpartystorage.expiration", 2591999],
       ["privacy.restrict3rdpartystorage.expiration_redirect", 2591999],
+      // Enable SA heuristics for trackers because the test depends on it.
+      [
+        "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+        false,
+      ],
     ],
   });
 
diff --git a/toolkit/components/antitracking/test/browser/browser_localStorageEvents.js b/toolkit/components/antitracking/test/browser/browser_localStorageEvents.js
index b7abad2d941e..4418c560a7b5 100644
--- a/toolkit/components/antitracking/test/browser/browser_localStorageEvents.js
+++ b/toolkit/components/antitracking/test/browser/browser_localStorageEvents.js
@@ -16,6 +16,11 @@ add_task(async function () {
       ["privacy.trackingprotection.enabled", false],
       ["privacy.trackingprotection.pbmode.enabled", false],
       ["privacy.trackingprotection.annotate_channels", true],
+      // Enable SA heuristics for trackers because the test depends on it.
+      [
+        "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+        false,
+      ],
     ],
   });
 
diff --git a/toolkit/components/antitracking/test/browser/browser_permissionPropagation.js b/toolkit/components/antitracking/test/browser/browser_permissionPropagation.js
index fb869087cdf7..83263533c2d9 100644
--- a/toolkit/components/antitracking/test/browser/browser_permissionPropagation.js
+++ b/toolkit/components/antitracking/test/browser/browser_permissionPropagation.js
@@ -313,6 +313,11 @@ add_task(async function testPermissionGrantedOnFirstParty() {
       ["privacy.trackingprotection.enabled", false],
       ["privacy.trackingprotection.pbmode.enabled", false],
       ["privacy.trackingprotection.annotate_channels", true],
+      // Enable SA heuristics for trackers because the test depends on it.
+      [
+        "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+        false,
+      ],
     ],
   });
 
diff --git a/toolkit/components/antitracking/test/browser/browser_script.js b/toolkit/components/antitracking/test/browser/browser_script.js
index 952e26c1d43b..9e76f8ce5433 100644
--- a/toolkit/components/antitracking/test/browser/browser_script.js
+++ b/toolkit/components/antitracking/test/browser/browser_script.js
@@ -19,6 +19,11 @@ add_task(async function () {
         "privacy.restrict3rdpartystorage.userInteractionRequiredForHosts",
         "tracking.example.com,tracking.example.org",
       ],
+      // Enable SA heuristics for trackers because the test depends on it.
+      [
+        "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+        false,
+      ],
     ],
   });
 
diff --git a/toolkit/components/antitracking/test/browser/browser_storageAccessSandboxed.js b/toolkit/components/antitracking/test/browser/browser_storageAccessSandboxed.js
index 11e337d7076b..3f265ee78e3a 100644
--- a/toolkit/components/antitracking/test/browser/browser_storageAccessSandboxed.js
+++ b/toolkit/components/antitracking/test/browser/browser_storageAccessSandboxed.js
@@ -221,7 +221,13 @@ AntiTracking.runTest(
       );
     });
   },
-  [["dom.storage_access.enabled", true]], // extra prefs
+  [
+    ["dom.storage_access.enabled", true],
+    [
+      "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+      false,
+    ],
+  ], // extra prefs
   false, // no window open test
   false, // no user-interaction test
   Ci.nsIWebProgressListener.STATE_COOKIES_BLOCKED_TRACKER, // expected blocking notifications
diff --git a/toolkit/components/antitracking/test/browser/browser_storageAccessThirdPartyChecks.js b/toolkit/components/antitracking/test/browser/browser_storageAccessThirdPartyChecks.js
index 5863eb0bba7e..33951f64f8f5 100644
--- a/toolkit/components/antitracking/test/browser/browser_storageAccessThirdPartyChecks.js
+++ b/toolkit/components/antitracking/test/browser/browser_storageAccessThirdPartyChecks.js
@@ -47,6 +47,13 @@ AntiTracking._createTask({
     "https://tracking.example.org",
     "https://tracking.example.org",
   ],
+  extraPrefs: [
+    // Enable SA heuristics for trackers because the test depends on it.
+    [
+      "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+      false,
+    ],
+  ],
 });
 
 add_task(async _ => {
diff --git a/toolkit/components/antitracking/test/browser/browser_storageAccessWithHeuristics.js b/toolkit/components/antitracking/test/browser/browser_storageAccessWithHeuristics.js
index 8385bef8d381..3a609ef83580 100644
--- a/toolkit/components/antitracking/test/browser/browser_storageAccessWithHeuristics.js
+++ b/toolkit/components/antitracking/test/browser/browser_storageAccessWithHeuristics.js
@@ -38,6 +38,11 @@ add_setup(async function () {
         "privacy.restrict3rdpartystorage.userInteractionRequiredForHosts",
         "tracking.example.com,tracking.example.org",
       ],
+      // Enable SA heuristics for trackers because the test depends on it.
+      [
+        "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+        false,
+      ],
     ],
   });
 
diff --git a/toolkit/components/antitracking/test/browser/browser_subResources.js b/toolkit/components/antitracking/test/browser/browser_subResources.js
index 1b85aabb243c..4bdb5ca8e48d 100644
--- a/toolkit/components/antitracking/test/browser/browser_subResources.js
+++ b/toolkit/components/antitracking/test/browser/browser_subResources.js
@@ -22,6 +22,11 @@ add_task(async function () {
       ],
       // Bug 1617611: Fix all the tests broken by "cookies SameSite=lax by default"
       ["network.cookie.sameSite.laxByDefault", false],
+      // Enable SA heuristics for trackers because the test depends on it.
+      [
+        "privacy.restrict3rdpartystorage.heuristic.exclude_third_party_trackers",
+        false,
+      ],
     ],
   });