diff --git a/third_party/disklrucache/build.gradle b/third_party/disklrucache/build.gradle
index e9190b2803..bb7bea96a9 100644
--- a/third_party/disklrucache/build.gradle
+++ b/third_party/disklrucache/build.gradle
@@ -1,7 +1,7 @@
 apply plugin: 'com.android.library'
 
 checkstyle {
-    toolVersion = "6.6"
+    toolVersion = "6.19"
     configFile = new File(projectDir, 'checkstyle.xml')
 }
 
diff --git a/third_party/disklrucache/src/main/java/com/bumptech/glide/disklrucache/StrictLineReader.java b/third_party/disklrucache/src/main/java/com/bumptech/glide/disklrucache/StrictLineReader.java
index 11135db04c..e87288763b 100644
--- a/third_party/disklrucache/src/main/java/com/bumptech/glide/disklrucache/StrictLineReader.java
+++ b/third_party/disklrucache/src/main/java/com/bumptech/glide/disklrucache/StrictLineReader.java
@@ -68,7 +68,7 @@ class StrictLineReader implements Closeable {
    * @throws NullPointerException if {@code in} or {@code charset} is null.
    * @throws IllegalArgumentException if the specified charset is not supported.
    */
-  public StrictLineReader(InputStream in, Charset charset) {
+  StrictLineReader(InputStream in, Charset charset) {
     this(in, 8192, charset);
   }
 
@@ -83,7 +83,7 @@ public StrictLineReader(InputStream in, Charset charset) {
    * @throws IllegalArgumentException if {@code capacity} is negative or zero
    * or the specified charset is not supported.
    */
-  public StrictLineReader(InputStream in, int capacity, Charset charset) {
+  StrictLineReader(InputStream in, int capacity, Charset charset) {
     if (in == null || charset == null) {
       throw new NullPointerException();
     }
@@ -105,6 +105,7 @@ public StrictLineReader(InputStream in, int capacity, Charset charset) {
    *
    * @throws IOException for errors when closing the underlying {@code InputStream}.
    */
+  @Override
   public void close() throws IOException {
     synchronized (in) {
       if (buf != null) {
@@ -122,7 +123,7 @@ public void close() throws IOException {
    * @throws IOException for underlying {@code InputStream} errors.
    * @throws EOFException for the end of source stream.
    */
-  public String readLine() throws IOException {
+  String readLine() throws IOException {
     synchronized (in) {
       if (buf == null) {
         throw new IOException("LineReader is closed");
@@ -176,7 +177,7 @@ public String toString() {
     }
   }
 
-  public boolean hasUnterminatedLine() {
+  boolean hasUnterminatedLine() {
     return end == -1;
   }