diff --git a/src/Symfony/Component/Lock/Lock.php b/src/Symfony/Component/Lock/Lock.php
index f7da528d1c777..e9eee18e3797d 100644
--- a/src/Symfony/Component/Lock/Lock.php
+++ b/src/Symfony/Component/Lock/Lock.php
@@ -114,7 +114,7 @@ public function acquire($blocking = false): ?bool
     /**
      * {@inheritdoc}
      */
-    public function refresh($ttl = null)
+    public function refresh(float $ttl = null)
     {
         if (null === $ttl) {
             $ttl = $this->ttl;
diff --git a/src/Symfony/Component/Lock/PersistingStoreInterface.php b/src/Symfony/Component/Lock/PersistingStoreInterface.php
index f3095db0c006f..03309a90b5662 100644
--- a/src/Symfony/Component/Lock/PersistingStoreInterface.php
+++ b/src/Symfony/Component/Lock/PersistingStoreInterface.php
@@ -49,5 +49,5 @@ public function exists(Key $key);
      *
      * @throws LockConflictedException
      */
-    public function putOffExpiration(Key $key, $ttl);
+    public function putOffExpiration(Key $key, float $ttl);
 }
diff --git a/src/Symfony/Component/Lock/Store/CombinedStore.php b/src/Symfony/Component/Lock/Store/CombinedStore.php
index 49d40566a4859..4dee0fa269113 100644
--- a/src/Symfony/Component/Lock/Store/CombinedStore.php
+++ b/src/Symfony/Component/Lock/Store/CombinedStore.php
@@ -106,7 +106,7 @@ public function waitAndSave(Key $key)
     /**
      * {@inheritdoc}
      */
-    public function putOffExpiration(Key $key, $ttl)
+    public function putOffExpiration(Key $key, float $ttl)
     {
         $successCount = 0;
         $failureCount = 0;
diff --git a/src/Symfony/Component/Lock/Store/FlockStore.php b/src/Symfony/Component/Lock/Store/FlockStore.php
index d1c303c534e8e..b2a8bc20d502e 100644
--- a/src/Symfony/Component/Lock/Store/FlockStore.php
+++ b/src/Symfony/Component/Lock/Store/FlockStore.php
@@ -106,7 +106,7 @@ private function lock(Key $key, bool $blocking)
     /**
      * {@inheritdoc}
      */
-    public function putOffExpiration(Key $key, $ttl)
+    public function putOffExpiration(Key $key, float $ttl)
     {
         // do nothing, the flock locks forever.
     }
diff --git a/src/Symfony/Component/Lock/Store/MemcachedStore.php b/src/Symfony/Component/Lock/Store/MemcachedStore.php
index d16ca154509ec..505e6fa5ea5c3 100644
--- a/src/Symfony/Component/Lock/Store/MemcachedStore.php
+++ b/src/Symfony/Component/Lock/Store/MemcachedStore.php
@@ -83,7 +83,7 @@ public function waitAndSave(Key $key)
     /**
      * {@inheritdoc}
      */
-    public function putOffExpiration(Key $key, $ttl)
+    public function putOffExpiration(Key $key, float $ttl)
     {
         if ($ttl < 1) {
             throw new InvalidTtlException(sprintf('%s() expects a TTL greater or equals to 1 second. Got %s.', __METHOD__, $ttl));
diff --git a/src/Symfony/Component/Lock/Store/PdoStore.php b/src/Symfony/Component/Lock/Store/PdoStore.php
index a35e142061c3f..bf2d6bc6ff489 100644
--- a/src/Symfony/Component/Lock/Store/PdoStore.php
+++ b/src/Symfony/Component/Lock/Store/PdoStore.php
@@ -152,7 +152,7 @@ public function waitAndSave(Key $key)
     /**
      * {@inheritdoc}
      */
-    public function putOffExpiration(Key $key, $ttl)
+    public function putOffExpiration(Key $key, float $ttl)
     {
         if ($ttl < 1) {
             throw new InvalidTtlException(sprintf('%s() expects a TTL greater or equals to 1 second. Got %s.', __METHOD__, $ttl));
diff --git a/src/Symfony/Component/Lock/Store/RedisStore.php b/src/Symfony/Component/Lock/Store/RedisStore.php
index c1aecbfcd2dc6..79403a138b384 100644
--- a/src/Symfony/Component/Lock/Store/RedisStore.php
+++ b/src/Symfony/Component/Lock/Store/RedisStore.php
@@ -86,7 +86,7 @@ public function waitAndSave(Key $key)
     /**
      * {@inheritdoc}
      */
-    public function putOffExpiration(Key $key, $ttl)
+    public function putOffExpiration(Key $key, float $ttl)
     {
         $script = '
             if redis.call("GET", KEYS[1]) == ARGV[1] then
diff --git a/src/Symfony/Component/Lock/Store/RetryTillSaveStore.php b/src/Symfony/Component/Lock/Store/RetryTillSaveStore.php
index 18890536f0576..79e28ce745388 100644
--- a/src/Symfony/Component/Lock/Store/RetryTillSaveStore.php
+++ b/src/Symfony/Component/Lock/Store/RetryTillSaveStore.php
@@ -80,7 +80,7 @@ public function waitAndSave(Key $key)
     /**
      * {@inheritdoc}
      */
-    public function putOffExpiration(Key $key, $ttl)
+    public function putOffExpiration(Key $key, float $ttl)
     {
         $this->decorated->putOffExpiration($key, $ttl);
     }
diff --git a/src/Symfony/Component/Lock/Store/SemaphoreStore.php b/src/Symfony/Component/Lock/Store/SemaphoreStore.php
index 829da3bfc661f..328380280b3b6 100644
--- a/src/Symfony/Component/Lock/Store/SemaphoreStore.php
+++ b/src/Symfony/Component/Lock/Store/SemaphoreStore.php
@@ -100,7 +100,7 @@ public function delete(Key $key)
     /**
      * {@inheritdoc}
      */
-    public function putOffExpiration(Key $key, $ttl)
+    public function putOffExpiration(Key $key, float $ttl)
     {
         // do nothing, the semaphore locks forever.
     }
diff --git a/src/Symfony/Component/Lock/Store/ZookeeperStore.php b/src/Symfony/Component/Lock/Store/ZookeeperStore.php
index 681416c905afc..0db550c469763 100644
--- a/src/Symfony/Component/Lock/Store/ZookeeperStore.php
+++ b/src/Symfony/Component/Lock/Store/ZookeeperStore.php
@@ -96,7 +96,7 @@ public function waitAndSave(Key $key)
     /**
      * {@inheritdoc}
      */
-    public function putOffExpiration(Key $key, $ttl)
+    public function putOffExpiration(Key $key, float $ttl)
     {
         // do nothing, zookeeper locks forever.
     }
diff --git a/src/Symfony/Component/Lock/Strategy/ConsensusStrategy.php b/src/Symfony/Component/Lock/Strategy/ConsensusStrategy.php
index 047820a409f1d..1338b10dd63f4 100644
--- a/src/Symfony/Component/Lock/Strategy/ConsensusStrategy.php
+++ b/src/Symfony/Component/Lock/Strategy/ConsensusStrategy.php
@@ -21,7 +21,7 @@ class ConsensusStrategy implements StrategyInterface
     /**
      * {@inheritdoc}
      */
-    public function isMet($numberOfSuccess, $numberOfItems)
+    public function isMet(int $numberOfSuccess, int $numberOfItems)
     {
         return $numberOfSuccess > ($numberOfItems / 2);
     }
@@ -29,7 +29,7 @@ public function isMet($numberOfSuccess, $numberOfItems)
     /**
      * {@inheritdoc}
      */
-    public function canBeMet($numberOfFailure, $numberOfItems)
+    public function canBeMet(int $numberOfFailure, int $numberOfItems)
     {
         return $numberOfFailure < ($numberOfItems / 2);
     }
diff --git a/src/Symfony/Component/Lock/Strategy/StrategyInterface.php b/src/Symfony/Component/Lock/Strategy/StrategyInterface.php
index beaa7280a2d49..0b8aa3b30f005 100644
--- a/src/Symfony/Component/Lock/Strategy/StrategyInterface.php
+++ b/src/Symfony/Component/Lock/Strategy/StrategyInterface.php
@@ -26,7 +26,7 @@ interface StrategyInterface
      *
      * @return bool
      */
-    public function isMet($numberOfSuccess, $numberOfItems);
+    public function isMet(int $numberOfSuccess, int $numberOfItems);
 
     /**
      * Returns whether or not the quorum *could* be met.
@@ -39,5 +39,5 @@ public function isMet($numberOfSuccess, $numberOfItems);
      *
      * @return bool
      */
-    public function canBeMet($numberOfFailure, $numberOfItems);
+    public function canBeMet(int $numberOfFailure, int $numberOfItems);
 }
diff --git a/src/Symfony/Component/Lock/Strategy/UnanimousStrategy.php b/src/Symfony/Component/Lock/Strategy/UnanimousStrategy.php
index 27404f3e9f052..63f9d1b4a1b2a 100644
--- a/src/Symfony/Component/Lock/Strategy/UnanimousStrategy.php
+++ b/src/Symfony/Component/Lock/Strategy/UnanimousStrategy.php
@@ -21,7 +21,7 @@ class UnanimousStrategy implements StrategyInterface
     /**
      * {@inheritdoc}
      */
-    public function isMet($numberOfSuccess, $numberOfItems)
+    public function isMet(int $numberOfSuccess, int $numberOfItems)
     {
         return $numberOfSuccess === $numberOfItems;
     }
@@ -29,7 +29,7 @@ public function isMet($numberOfSuccess, $numberOfItems)
     /**
      * {@inheritdoc}
      */
-    public function canBeMet($numberOfFailure, $numberOfItems)
+    public function canBeMet(int $numberOfFailure, int $numberOfItems)
     {
         return 0 === $numberOfFailure;
     }