diff --git a/build.gradle b/build.gradle
index bd339f9e3b..a4a58e7b60 100644
--- a/build.gradle
+++ b/build.gradle
@@ -62,6 +62,7 @@ ext {
     daggerVersion = "2.28.3"
     markwonVersion =  "4.4.0"
     prismVersion = "2.0.0"
+    butterknifeVersion = "10.2.2"
     androidLibraryVersion = "master-SNAPSHOT"
 
     travisBuild = System.getenv("TRAVIS") == "true"
@@ -299,8 +300,8 @@ dependencies {
     implementation 'com.github.albfernandez:juniversalchardet:2.0.3' // need this version for Android <7
     compileOnly 'com.google.code.findbugs:annotations:2.0.1'
     implementation 'commons-io:commons-io:2.7'
-    implementation 'com.jakewharton:butterknife:10.2.1'
-    kapt 'com.jakewharton:butterknife-compiler:10.2.2'
+    implementation "com.jakewharton:butterknife:$butterknifeVersion"
+    kapt "com.jakewharton:butterknife-compiler:$butterknifeVersion"
     implementation 'org.greenrobot:eventbus:3.2.0'
     implementation 'com.googlecode.ez-vcard:ez-vcard:0.11.0'
     implementation 'org.lukhnos:nnio:0.2'
diff --git a/lint.xml b/lint.xml
index cc23f95b9a..4a0a972d2e 100644
--- a/lint.xml
+++ b/lint.xml
@@ -59,7 +59,7 @@
     <issue id="ObsoleteLintCustomCheck" severity="warning">
         <ignore path="**/fragment-1.2.5/**/lint.jar" />
         <ignore path="**/work-runtime-2.**/**/lint.jar" />
-        <ignore path="**/jetified-butterknife-runtime-10.2.1/**/lint.jar" />
+        <ignore path="**/jetified-butterknife-runtime-10.**/**/lint.jar" />
         <ignore path="**/jetified-dagger-lint-aar-2.28.**/**/lint.jar" />
     </issue>
 </lint>