diff --git a/README.md b/README.md
index 482d9e9..5a6705a 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,7 @@ Redis command                                    | Description
 **DEL** *key* *[key ...]*                        | Deletes one or more keys
 **DECR** *key*                                   | Decrements the integer value of a key by one
 **DECRBY** *key* *decrement*                     | Decrements the integer value of a key by `decrement` value
+**DECRBYFLOAT** *key* *decrement*                | Decrements the float value of a key by `decrement` value
 **EXISTS** *key*                                 | Determines if a key exists
 **EXPIRE** *key* *seconds*                       | Sets a key's time to live in seconds
 **FLUSHDB**                                      | Flushes the database
@@ -49,6 +50,7 @@ Redis command                                    | Description
 **HINCRBY** *key* *field* *increment*            | Increments the integer stored at `field` in the hash stored at `key` by `increment`.
 **INCR** *key*                                   | Increments the integer value of a key by one
 **INCRBY** *key* *increment*                     | Increments the integer value of a key by `increment` value
+**INCRBYFLOAT** *key* *increment*                | Increments the float value of a key by `increment` value
 **KEYS** *pattern*                               | Finds all keys matching the given pattern
 **LINDEX** *key* *index*                         | Returns the element at index *index* in the list stored at *key*
 **LLEN** *key*                                   | Returns the length of the list stored at *key*
diff --git a/src/M6Web/Component/RedisMock/RedisMock.php b/src/M6Web/Component/RedisMock/RedisMock.php
index 9801d43..841f383 100644
--- a/src/M6Web/Component/RedisMock/RedisMock.php
+++ b/src/M6Web/Component/RedisMock/RedisMock.php
@@ -173,6 +173,23 @@ public function incrby($key, $increment)
         return $this->returnPipedInfo(self::$dataValues[$this->storage][$key]);
     }
 
+    public function incrbyfloat($key, $increment)
+    {
+        $this->deleteOnTtlExpired($key);
+
+        if (!isset(self::$dataValues[$this->storage][$key])) {
+            self::$dataValues[$this->storage][$key] = (float) $increment;
+        } elseif (!is_float(self::$dataValues[$this->storage][$key])) {
+            return $this->returnPipedInfo(null);
+        } else {
+            self::$dataValues[$this->storage][$key] += (float) $increment;
+        }
+
+        self::$dataTypes[$this->storage][$key] = 'string';
+
+        return $this->returnPipedInfo(self::$dataValues[$this->storage][$key]);
+    }
+
     public function decr($key)
     {
         return $this->decrby($key, 1);
@@ -195,6 +212,23 @@ public function decrby($key, $decrement)
         return $this->returnPipedInfo(self::$dataValues[$this->storage][$key]);
     }
 
+    public function decrbyfloat($key, $decrement)
+    {
+        $this->deleteOnTtlExpired($key);
+
+        if (!isset(self::$dataValues[$this->storage][$key])) {
+            self::$dataValues[$this->storage][$key] = 0;
+        } elseif (!is_float(self::$dataValues[$this->storage][$key])) {
+            return $this->returnPipedInfo(null);
+        }
+
+        self::$dataValues[$this->storage][$key] -= (float) $decrement;
+
+        self::$dataTypes[$this->storage][$key] = 'string';
+
+        return $this->returnPipedInfo(self::$dataValues[$this->storage][$key]);
+    }
+
     // Keys
 
     public function type($key)
diff --git a/tests/units/RedisMock.php b/tests/units/RedisMock.php
index 716b9fb..af77f6b 100644
--- a/tests/units/RedisMock.php
+++ b/tests/units/RedisMock.php
@@ -269,6 +269,41 @@ public function testIncrby()
                 ->isEqualTo(3);
     }
 
+    public function testIncrbyfloat()
+    {
+        $redisMock = new Redis();
+
+        $this->assert
+            ->variable($redisMock->get('test'))
+                ->isNull()
+            ->float($redisMock->incrbyfloat('test', 0.5))
+                ->isEqualTo(0.5)
+            ->float($redisMock->get('test'))
+                ->isEqualTo(0.5)
+            ->string($redisMock->type('test'))
+                ->isEqualTo('string')
+            ->float($redisMock->incrbyfloat('test', 1))
+                ->isEqualTo(1.5)
+            ->float($redisMock->incrbyfloat('test', 2.5))
+                ->isEqualTo(4)
+            ->string($redisMock->set('test', 'something'))
+                ->isEqualTo('OK')
+            ->variable($redisMock->incrbyfloat('test', 3.5))
+                ->isNull()
+            ->integer($redisMock->del('test'))
+                ->isEqualTo(1)
+            ->string($redisMock->type('test'))
+                ->isEqualTo('none')
+            ->float($redisMock->incrbyfloat('test', 0.5))
+                ->isEqualTo(0.5)
+            ->integer($redisMock->expire('test', 1))
+                ->isEqualTo(1);
+        sleep(2);
+        $this->assert
+            ->float($redisMock->incrbyfloat('test', 0.5))
+                ->isEqualTo(0.5);
+    }
+
     public function testDecr()
     {
         $redisMock = new Redis();
@@ -339,6 +374,41 @@ public function testDecrby()
                 ->isEqualTo(-3);
     }
 
+    public function testDecrbyfloat()
+    {
+        $redisMock = new Redis();
+
+        $this->assert
+            ->variable($redisMock->get('test'))
+            ->isNull()
+            ->float($redisMock->decrbyfloat('test', 0.5))
+            ->isEqualTo(-0.5)
+            ->float($redisMock->get('test'))
+            ->isEqualTo(-0.5)
+            ->string($redisMock->type('test'))
+            ->isEqualTo('string')
+            ->float($redisMock->decrbyfloat('test', 1))
+            ->isEqualTo(-1.5)
+            ->float($redisMock->decrbyfloat('test', 2.5))
+            ->isEqualTo(-4.0)
+            ->string($redisMock->set('test', 'something'))
+            ->isEqualTo('OK')
+            ->variable($redisMock->decrbyfloat('test', 3.5))
+            ->isNull()
+            ->integer($redisMock->del('test'))
+            ->isEqualTo(1)
+            ->string($redisMock->type('test'))
+            ->isEqualTo('none')
+            ->float($redisMock->decrbyfloat('test', 0.5))
+            ->isEqualTo(-0.5)
+            ->integer($redisMock->expire('test', 1))
+            ->isEqualTo(1);
+        sleep(2);
+        $this->assert
+            ->float($redisMock->decrbyfloat('test', 0.5))
+            ->isEqualTo(-0.5);
+    }
+
     public function testKeys() {
         $redisMock = new Redis();