diff --git a/app/build.gradle b/app/build.gradle
index 7fa8575..fe766d7 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -42,7 +42,7 @@ android {
         applicationId "com.javinator9889.handwashingreminder"
         minSdkVersion 17
         targetSdkVersion 29
-        versionCode 109
+        versionCode 110
         versionName "1.1.2-${gitCommitHash}"
         multiDexEnabled true
         resConfigs "en", "es"
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 4d1d5e2..1327192 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -83,3 +83,15 @@
 # prevent Crashlytics obfuscation
 -keep class com.google.firebase.crashlytics.** { *; }
 -dontwarn com.google.firebase.crashlytics.**
+
+-keepclassmembers enum * {
+    public static **[] values();
+    public static ** valueOf(java.lang.String);
+}
+
+# keep the specified class members from being removed or renamed
+# only if the class is preserved
+-keepclassmembers class android.content.Intent {
+  android.content.Intent setIdentifier(java.lang.String);
+  java.lang.String getIdentifier();
+}