diff --git a/app/proguard-debug.cfg b/app/proguard-debug.cfg
index 0f5d3d93..496c78a4 100644
--- a/app/proguard-debug.cfg
+++ b/app/proguard-debug.cfg
@@ -82,6 +82,12 @@
 -keep class !android.support.v7.internal.view.menu.MenuBuilder, !android.support.v7.internal.view.menu.SubMenuBuilder, android.support.v7.** { *; }
 -keep interface android.support.v7.** { *; }
 
+## JAVAX UNITS
+
+-keep class javax.measure.** { *; }
+-keepnames class javax.measure.** { *; }
+-keepclassmembers class javax.measure.** { *; }
+
 
 ## ACRA
 
diff --git a/app/proguard.cfg b/app/proguard.cfg
index c690dfaf..f85f4f1f 100644
--- a/app/proguard.cfg
+++ b/app/proguard.cfg
@@ -83,6 +83,12 @@
 -keep class !android.support.v7.internal.view.menu.MenuBuilder, !android.support.v7.internal.view.menu.SubMenuBuilder, android.support.v7.** { *; }
 -keep interface android.support.v7.** { *; }
 
+## JAVAX UNITS
+
+-keep class javax.measure.** { *; }
+-keepnames class javax.measure.** { *; }
+-keepclassmembers class javax.measure.** { *; }
+
 ## LOGS
 
 -assumenosideeffects class android.util.Log {