diff --git a/app/src/main/java/com/cappielloantonio/tempo/github/models/Assets.kt b/app/src/main/java/com/cappielloantonio/tempo/github/models/Assets.kt
index b4b61a4e..6e815a70 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/github/models/Assets.kt
+++ b/app/src/main/java/com/cappielloantonio/tempo/github/models/Assets.kt
@@ -1,7 +1,9 @@
 package com.cappielloantonio.tempo.github.models
 
+import androidx.annotation.Keep
 import com.google.gson.annotations.SerializedName
 
+@Keep
 data class Assets(
         @SerializedName("url")
         var url: String? = null,
diff --git a/app/src/main/java/com/cappielloantonio/tempo/github/models/Author.kt b/app/src/main/java/com/cappielloantonio/tempo/github/models/Author.kt
index dbd93c0f..996da2de 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/github/models/Author.kt
+++ b/app/src/main/java/com/cappielloantonio/tempo/github/models/Author.kt
@@ -1,7 +1,9 @@
 package com.cappielloantonio.tempo.github.models
 
+import androidx.annotation.Keep
 import com.google.gson.annotations.SerializedName
 
+@Keep
 data class Author(
         @SerializedName("login")
         var login: String? = null,
diff --git a/app/src/main/java/com/cappielloantonio/tempo/github/models/LatestRelease.kt b/app/src/main/java/com/cappielloantonio/tempo/github/models/LatestRelease.kt
index d70bf72b..ae4a8ec7 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/github/models/LatestRelease.kt
+++ b/app/src/main/java/com/cappielloantonio/tempo/github/models/LatestRelease.kt
@@ -1,7 +1,9 @@
 package com.cappielloantonio.tempo.github.models
 
+import androidx.annotation.Keep
 import com.google.gson.annotations.SerializedName
 
+@Keep
 data class LatestRelease(
         @SerializedName("url")
         var url: String? = null,
diff --git a/app/src/main/java/com/cappielloantonio/tempo/github/models/Reactions.kt b/app/src/main/java/com/cappielloantonio/tempo/github/models/Reactions.kt
index 382bb7b6..21f3f90f 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/github/models/Reactions.kt
+++ b/app/src/main/java/com/cappielloantonio/tempo/github/models/Reactions.kt
@@ -1,7 +1,9 @@
 package com.cappielloantonio.tempo.github.models
 
+import androidx.annotation.Keep
 import com.google.gson.annotations.SerializedName
 
+@Keep
 data class Reactions(
         @SerializedName("url")
         var url: String? = null,
diff --git a/app/src/main/java/com/cappielloantonio/tempo/github/models/Uploader.kt b/app/src/main/java/com/cappielloantonio/tempo/github/models/Uploader.kt
index 9cd6c52a..e0c74ec8 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/github/models/Uploader.kt
+++ b/app/src/main/java/com/cappielloantonio/tempo/github/models/Uploader.kt
@@ -1,7 +1,9 @@
 package com.cappielloantonio.tempo.github.models
 
+import androidx.annotation.Keep
 import com.google.gson.annotations.SerializedName
 
+@Keep
 data class Uploader(
         @SerializedName("login")
         var login: String? = null,