diff --git a/build.gradle b/build.gradle
index 93f3cf651..a2da01c82 100644
--- a/build.gradle
+++ b/build.gradle
@@ -47,7 +47,7 @@ jacoco {
     toolVersion = "0.7.5.201505241946"
 }
 
-final htsjdkVersion = System.getProperty('htsjdk.version', '2.9.0')
+final htsjdkVersion = System.getProperty('htsjdk.version', '2.9.1')
 
 dependencies {
     compile 'com.google.guava:guava:15.0'
diff --git a/src/test/java/picard/util/FifoBufferTest.java b/src/test/java/picard/util/FifoBufferTest.java
index 5f65bd68b..4f67877aa 100644
--- a/src/test/java/picard/util/FifoBufferTest.java
+++ b/src/test/java/picard/util/FifoBufferTest.java
@@ -57,8 +57,8 @@ public void test(final double megabytes) throws IOException {
         }
 
         // Run the input file through the FifoBuffer and back into another file
-        final Md5CalculatingInputStream in   = new Md5CalculatingInputStream(new FileInputStream(inputFile), null);
-        final Md5CalculatingOutputStream out = new Md5CalculatingOutputStream(new FileOutputStream("/dev/null"), null);
+        final Md5CalculatingInputStream in   = new Md5CalculatingInputStream(new FileInputStream(inputFile), (File)null);
+        final Md5CalculatingOutputStream out = new Md5CalculatingOutputStream(new FileOutputStream("/dev/null"), (File)null);
         final PrintStream outStream = new PrintStream(out);
         final FifoBuffer buffer = new FifoBuffer(in, outStream);
         buffer.BUFFER_SIZE = 128 * 1024 * 1024;