diff --git a/modules/cloudflarepurger/src/Plugin/Purge/DiagnosticCheck/ApiRateLimitCheck.php b/modules/cloudflarepurger/src/Plugin/Purge/DiagnosticCheck/ApiRateLimitCheck.php
index e5db7d3..152ad0f 100644
--- a/modules/cloudflarepurger/src/Plugin/Purge/DiagnosticCheck/ApiRateLimitCheck.php
+++ b/modules/cloudflarepurger/src/Plugin/Purge/DiagnosticCheck/ApiRateLimitCheck.php
@@ -84,6 +84,9 @@ class ApiRateLimitCheck extends DiagnosticCheckBase implements DiagnosticCheckIn
       return self::SEVERITY_ERROR;
     }
 
+    // Reset the 5 minute API rate count if 5 minutes has elapsed.
+    $this->state->resetApiRateCount();
+
     // Current number of purges today.
     $rate_count = $this->state->getApiRateCount();
     $this->value = $rate_count;
diff --git a/src/CloudFlareStateInterface.php b/src/CloudFlareStateInterface.php
index 8bc8b62..bd71d6e 100644
--- a/src/CloudFlareStateInterface.php
+++ b/src/CloudFlareStateInterface.php
@@ -30,6 +30,11 @@ interface CloudFlareStateInterface {
    */
   public function incrementApiRateCount();
 
+  /**
+   * Reset the 5 minute API rate count if 5 minutes has elapsed.
+   */
+  public function resetApiRateCount();
+
   /**
    * Increment the count of tag purges done today.
    *
diff --git a/src/State.php b/src/State.php
index de7614b..cac6a0f 100644
--- a/src/State.php
+++ b/src/State.php
@@ -18,7 +18,7 @@ class State implements CloudFlareStateInterface {
   /**
    * Tracks rate limits associated with CloudFlare Api.
    *
-   * @var \Drupal\cloudflare\CloudFlareStateInterface
+   * @var \Drupal\Core\State\StateInterface
    */
   protected $state;
 
@@ -97,6 +97,23 @@ class State implements CloudFlareStateInterface {
     }
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function resetApiRateCount() {
+    $last_recorded_timestamp = $this->state->get(self::API_RATE_COUNT_START);
+    $last_recorded_timestamp = is_null($last_recorded_timestamp) ? new \DateTime('2001-01-01') : $last_recorded_timestamp;
+
+    $now = $this->timestamper->now();
+    $diff = $now->getTimestamp() - $last_recorded_timestamp->getTimestamp();
+    $minutes_passed = $diff / 60;
+
+    if ($minutes_passed >= 5) {
+      $this->state->set(self::API_RATE_COUNT, 0);
+      $this->state->set(self::API_RATE_COUNT_START, $now);
+    }
+  }
+
   /**
    * {@inheritdoc}
    */