diff --git a/blockcanary-android/src/main/java/com/github/moduth/blockcanary/BlockCanaryContext.java b/blockcanary-android/src/main/java/com/github/moduth/blockcanary/BlockCanaryContext.java
index 982da0f..c41e90d 100644
--- a/blockcanary-android/src/main/java/com/github/moduth/blockcanary/BlockCanaryContext.java
+++ b/blockcanary-android/src/main/java/com/github/moduth/blockcanary/BlockCanaryContext.java
@@ -134,7 +134,7 @@ public boolean zipLogFile(File[] src, File dest) {
      */
     @Override
     public void uploadLogFile(File zippedFile) {
-
+        throw new UnsupportedOperationException();
     }
 
     /**
diff --git a/blockcanary-no-op/src/main/java/com/github/moduth/blockcanary/BlockCanary.java b/blockcanary-no-op/src/main/java/com/github/moduth/blockcanary/BlockCanary.java
index 7f7cd70..88a41c5 100644
--- a/blockcanary-no-op/src/main/java/com/github/moduth/blockcanary/BlockCanary.java
+++ b/blockcanary-no-op/src/main/java/com/github/moduth/blockcanary/BlockCanary.java
@@ -42,15 +42,19 @@ public static BlockCanary get() {
     }
 
     public void start() {
+        throw new UnsupportedOperationException();
     }
 
     public void stop() {
+        throw new UnsupportedOperationException();
     }
 
     public void upload() {
+        throw new UnsupportedOperationException();
     }
 
     public void recordStartTime() {
+        throw new UnsupportedOperationException();
     }
 
     public boolean isMonitorDurationEnd() {
diff --git a/blockcanary-no-op/src/main/java/com/github/moduth/blockcanary/BlockCanaryContext.java b/blockcanary-no-op/src/main/java/com/github/moduth/blockcanary/BlockCanaryContext.java
index eabb490..2e1f9d9 100644
--- a/blockcanary-no-op/src/main/java/com/github/moduth/blockcanary/BlockCanaryContext.java
+++ b/blockcanary-no-op/src/main/java/com/github/moduth/blockcanary/BlockCanaryContext.java
@@ -76,7 +76,7 @@ public boolean zipLogFile(File[] src, File dest) {
     }
 
     public void uploadLogFile(File zippedFile) {
-
+        throw new UnsupportedOperationException();
     }
 
     @Override