diff --git a/app/build.gradle b/app/build.gradle
index a56ebda18d..1691331908 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -194,6 +194,7 @@ dependencies {
     implementation "org.slf4j:slf4j-api:1.7.21"
     implementation "com.jjoe64:graphview:4.0.1"
     implementation "com.joanzapata.iconify:android-iconify-fontawesome:2.1.1"
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
     implementation 'com.google.android.gms:play-services-wearable:10.2.1'
     implementation(name: "android-edittext-validator-v1.3.4-mod", ext: "aar")
     implementation(name: "sightparser-release", ext: "aar")