diff --git a/UPGRADE-2.2.md b/UPGRADE-2.2.md
index 7c7b31c9fe..5960d998da 100644
--- a/UPGRADE-2.2.md
+++ b/UPGRADE-2.2.md
@@ -646,3 +646,23 @@
    extended with an optional `$context` array. This was necessary to allow for
    more complex use-cases that require context information during the
    (de)normalization and en-/decoding steps.
+
+### HttpKernel
+
+ * The `Symfony\Component\HttpKernel\Log\LoggerInterface` now extends `Psr\Log\LoggerInterface`.
+   So if you have implemented your own logger, you need to implement these methods:
+
+     * `emergency`
+     * `critical`
+     * `error`
+     * `warning`
+     * `log`
+
+#### Deprecations:
+
+ * The following Logger methods are deprecated and will be removed in 3.0. You should use the new PSR-3 methods:
+
+     * `emerg()` -> `emergency()`
+     * `crit()`  -> `critical()`
+     * `err()`   -> `error()`
+     * `warn()`  -> `warning()`