diff --git a/pom.xml b/pom.xml
index ea7bfcdee5..eb372fe509 100644
--- a/pom.xml
+++ b/pom.xml
@@ -55,7 +55,7 @@
 			we need to compile against version 23. All such classes are in the org.acra.jraf package.
 		-->
         <android.version>23</android.version>
-		<support.version>23.3.0</support.version>
+		<support.version>24.1.1</support.version>
 	</properties>
 
 	<dependencies>
diff --git a/src/main/java/org/acra/collector/DisplayManagerCollector.java b/src/main/java/org/acra/collector/DisplayManagerCollector.java
index 2533055035..723e7410cf 100644
--- a/src/main/java/org/acra/collector/DisplayManagerCollector.java
+++ b/src/main/java/org/acra/collector/DisplayManagerCollector.java
@@ -18,14 +18,13 @@
 import android.content.Context;
 import android.graphics.Point;
 import android.graphics.Rect;
-import android.hardware.display.DisplayManager;
 import android.os.Build;
 import android.support.annotation.NonNull;
+import android.support.v4.hardware.display.DisplayManagerCompat;
 import android.util.DisplayMetrics;
 import android.util.SparseArray;
 import android.view.Display;
 import android.view.Surface;
-import android.view.WindowManager;
 
 import org.acra.ReportField;
 import org.acra.builder.ReportBuilder;
@@ -48,23 +47,8 @@ final class DisplayManagerCollector extends Collector {
     @NonNull
     @Override
     String collect(ReportField reportField, ReportBuilder reportBuilder) {
-        final Display[] displays;
         final StringBuilder result = new StringBuilder();
-
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
-            // Before Android 4.2, there was a single display available from the
-            // window manager
-            final WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
-            displays = new Display[1];
-            displays[0] = windowManager.getDefaultDisplay();
-        } else {
-            // Since Android 4.2, we can fetch multiple displays with the
-            // DisplayManager.
-            final DisplayManager displayManager = (DisplayManager) context.getSystemService(Context.DISPLAY_SERVICE);
-            displays = displayManager.getDisplays();
-        }
-
-        for (Display display : displays) {
+        for (Display display : DisplayManagerCompat.getInstance(context).getDisplays()) {
             result.append(collectDisplayData(display));
         }
 
diff --git a/src/main/java/org/acra/collector/LogCatCollector.java b/src/main/java/org/acra/collector/LogCatCollector.java
index 9eb6e4848f..f48b1d082a 100644
--- a/src/main/java/org/acra/collector/LogCatCollector.java
+++ b/src/main/java/org/acra/collector/LogCatCollector.java
@@ -89,11 +89,6 @@ private String collectLogCat(@Nullable String bufferName) {
         final int tailIndex = logcatArgumentsList.indexOf("-t");
         if (tailIndex > -1 && tailIndex < logcatArgumentsList.size()) {
             tailCount = Integer.parseInt(logcatArgumentsList.get(tailIndex + 1));
-            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.FROYO) {
-                logcatArgumentsList.remove(tailIndex + 1);
-                logcatArgumentsList.remove(tailIndex);
-                logcatArgumentsList.add("-d");
-            }
         } else {
             tailCount = -1;
         }
diff --git a/src/main/java/org/acra/collector/LogFileCollector.java b/src/main/java/org/acra/collector/LogFileCollector.java
index 85d6888942..b0e6bf254f 100644
--- a/src/main/java/org/acra/collector/LogFileCollector.java
+++ b/src/main/java/org/acra/collector/LogFileCollector.java
@@ -18,19 +18,23 @@
 
 import android.app.Application;
 import android.content.Context;
-import android.os.Build;
 import android.os.Environment;
 import android.support.annotation.NonNull;
+import android.support.v4.content.ContextCompat;
 
 import org.acra.ACRA;
-import org.acra.file.Directory;
 import org.acra.ACRAConstants;
 import org.acra.ReportField;
 import org.acra.builder.ReportBuilder;
 import org.acra.config.ACRAConfiguration;
+import org.acra.file.Directory;
 import org.acra.util.IOUtils;
 
-import java.io.*;
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
 
 import static org.acra.ACRA.LOG_TAG;
 
@@ -94,11 +98,7 @@ private InputStream getStream(@NonNull Directory directory, @NonNull String file
                 dir = context.getExternalCacheDir();
                 break;
             case NO_BACKUP_FILES:
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-                    dir = context.getNoBackupFilesDir();
-                } else {
-                    dir = context.getFilesDir();
-                }
+                dir = ContextCompat.getNoBackupFilesDir(context);
                 break;
             case EXTERNAL_STORAGE:
                 dir = Environment.getExternalStorageDirectory();
diff --git a/src/main/java/org/acra/dialog/CrashReportDialog.java b/src/main/java/org/acra/dialog/CrashReportDialog.java
index 59da57a9dc..f71f0313c9 100644
--- a/src/main/java/org/acra/dialog/CrashReportDialog.java
+++ b/src/main/java/org/acra/dialog/CrashReportDialog.java
@@ -17,6 +17,7 @@
 
 import org.acra.ACRA;
 import org.acra.ACRAConstants;
+import org.acra.prefs.PrefUtils;
 import org.acra.prefs.SharedPreferencesFactory;
 
 
@@ -220,7 +221,7 @@ public void onClick(DialogInterface dialog, int which) {
                 userEmail = userEmailView.getText().toString();
                 final SharedPreferences.Editor prefEditor = prefs.edit();
                 prefEditor.putString(ACRA.PREF_USER_EMAIL_ADDRESS, userEmail);
-                prefEditor.commit();
+                PrefUtils.save(prefEditor);
             } else {
                 userEmail = prefs.getString(ACRA.PREF_USER_EMAIL_ADDRESS, "");
             }