diff --git a/build.gradle b/build.gradle
index b0881e63..33e493f0 100644
--- a/build.gradle
+++ b/build.gradle
@@ -71,10 +71,6 @@ allprojects {
     }
 
     project.ext {
-        slf4jVersion = '1.7.32'
-        logbackVersion = '1.2.9'
-        junitVersion = '5.8.2'
-        sopJavaVersion = '1.2.0'
         rootConfigDir = new File(rootDir, 'config')
         gitCommit = getGitCommit()
         isContinuousIntegrationEnvironment = Boolean.parseBoolean(System.getenv('CI'))
diff --git a/pgpainless-core/build.gradle b/pgpainless-core/build.gradle
index 6cb6faa5..50cbb700 100644
--- a/pgpainless-core/build.gradle
+++ b/pgpainless-core/build.gradle
@@ -7,6 +7,7 @@ plugins {
 }
 
 dependencies {
+    // JUnit
     testImplementation "org.junit.jupiter:junit-jupiter-api:$junitVersion"
     testImplementation "org.junit.jupiter:junit-jupiter-params:$junitVersion"
     testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:$junitVersion"
@@ -19,6 +20,6 @@ dependencies {
     api "org.bouncycastle:bcprov-jdk15to18:$bouncyCastleVersion"
     api "org.bouncycastle:bcpg-jdk15to18:$bouncyCastleVersion"
 
-    // https://mvnrepository.com/artifact/com.google.code.findbugs/jsr305
-    implementation group: 'com.google.code.findbugs', name: 'jsr305', version: '3.0.2'
+    // @Nullable, @Nonnull annotations
+    implementation "com.google.code.findbugs:jsr305:3.0.2"
 }
diff --git a/version.gradle b/version.gradle
index 2d2d8941..9406a66b 100644
--- a/version.gradle
+++ b/version.gradle
@@ -9,5 +9,9 @@ allprojects {
         pgpainlessMinAndroidSdk = 10
         javaSourceCompatibility = 1.8
         bouncyCastleVersion = '1.71'
+        slf4jVersion = '1.7.32'
+        logbackVersion = '1.2.9'
+        junitVersion = '5.8.2'
+        sopJavaVersion = '1.2.0'
     }
 }