diff --git a/app/build.gradle b/app/build.gradle
index c8ea5a25..8a6b25ea 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -6,6 +6,7 @@ apply plugin: 'io.fabric'
 apply plugin: 'com.github.triplet.play'
 apply from: 'jacoco.gradle'
 apply from: 'sonarqube.gradle'
+apply from: 'hooks.gradle'
 
 android {
     compileSdkVersion 28
diff --git a/app/hooks.gradle b/app/hooks.gradle
new file mode 100644
index 00000000..038fa9fb
--- /dev/null
+++ b/app/hooks.gradle
@@ -0,0 +1,10 @@
+apply plugin: "com.star-zero.gradle.githook"
+
+githook {
+    failOnMissingHooksDir = false
+    hooks {
+        "pre-push" {
+            shell = "./app/play-publish-lint.sh"
+        }
+    }
+}
diff --git a/app/play-publish-lint.sh b/app/play-publish-lint.sh
new file mode 100755
index 00000000..d3354b1a
--- /dev/null
+++ b/app/play-publish-lint.sh
@@ -0,0 +1,7 @@
+#!/bin/bash -
+
+content=$(cat < "app/src/main/play/release-notes/pl-PL/default.txt") || exit
+if [[ "${#content}" -gt 500 ]]; then
+    echo >&2 "Release notes content has reached the limit of 500 characters"
+    exit 1
+fi
diff --git a/app/src/main/play/release-notes/pl-PL/default.txt b/app/src/main/play/release-notes/pl-PL/default.txt
index 7fe143d8..e2048e1f 100644
--- a/app/src/main/play/release-notes/pl-PL/default.txt
+++ b/app/src/main/play/release-notes/pl-PL/default.txt
@@ -2,7 +2,7 @@ Wersja 0.9.0
 
 Dodaliśmy:
 - zarządzanie dostępem mobilnym do dziennika
-- wyświetlanie sumy punktów (jeśli dziennik obsługuje)
+- wyświetlanie sumy punktów
 - wyświetlanie informacji o wygasłej sesji, gdy zostanie zmienione hasło
 
 Naprawiliśmy:
diff --git a/build.gradle b/build.gradle
index 4ed9ec68..ac8a0926 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,6 +14,7 @@ buildscript {
         classpath "io.fabric.tools:gradle:1.29.0"
         classpath "com.github.triplet.gradle:play-publisher:2.2.1"
         classpath "org.sonarsource.scanner.gradle:sonarqube-gradle-plugin:2.7.1"
+        classpath "gradle.plugin.com.star-zero.gradle:githook:1.1.0"
     }
 }