diff --git a/lib/configonlylib.php b/lib/configonlylib.php
index bcdfa9bee90..cddb3653110 100644
--- a/lib/configonlylib.php
+++ b/lib/configonlylib.php
@@ -215,6 +215,9 @@ function min_get_slash_argument($clean = true) {
  */
 function min_get_minimum_revision(): int {
     static $timestamp = null;
+    // Days that will be deducted.
+    // Avoids errors when date comparisons are made at time of packaging for next release.
+    $tolerancedays = 2;
 
     if ($timestamp === null) {
         global $CFG;
@@ -224,7 +227,7 @@ function min_get_minimum_revision(): int {
         // Parse the date components.
         $year = intval(substr($datestring, 0, 4));
         $month = intval(substr($datestring, 4, 2));
-        $day = intval(substr($datestring, 6, 2));
+        $day = intval(substr($datestring, 6, 2)) - $tolerancedays;
         // Return converted GMT Unix timestamp.
         $timestamp = gmmktime(0, 0, 0, $month, $day, $year);
     }
diff --git a/lib/tests/configonlylib_test.php b/lib/tests/configonlylib_test.php
index 8a900095376..2bd8c8ca04d 100644
--- a/lib/tests/configonlylib_test.php
+++ b/lib/tests/configonlylib_test.php
@@ -153,6 +153,8 @@ class configonlylib_test extends \advanced_testcase {
         // This is fairly hard to write a test for, but we can at least check that it returns a number
         // greater than the version when the feature was first introduced.
         $firstintroduced = 1669593600; // Equivalent to 20221128 00:00:00 GMT.
+        // Deduct our two day tolerance.
+        $firstintroduced = $firstintroduced - (DAYSECS * 2);
         $this->assertGreaterThanOrEqual($firstintroduced, min_get_minimum_revision());
     }