diff --git a/src/main/java/net/thauvin/erik/mobibot/TwitterOAuth.java b/src/main/java/net/thauvin/erik/mobibot/TwitterOAuth.java
index f69fb8d..1fc1b34 100644
--- a/src/main/java/net/thauvin/erik/mobibot/TwitterOAuth.java
+++ b/src/main/java/net/thauvin/erik/mobibot/TwitterOAuth.java
@@ -27,6 +27,7 @@ import java.io.InputStreamReader;
  * @created Sep 13, 2010
  * @since 1.0
  */
+@SuppressWarnings("PMD.UseUtilityClass")
 public final class TwitterOAuth {
     /**
      * Twitter OAuth Client Registration.
diff --git a/src/main/java/net/thauvin/erik/mobibot/entries/EntriesMgr.java b/src/main/java/net/thauvin/erik/mobibot/entries/EntriesMgr.java
index 453e56a..fc8b401 100644
--- a/src/main/java/net/thauvin/erik/mobibot/entries/EntriesMgr.java
+++ b/src/main/java/net/thauvin/erik/mobibot/entries/EntriesMgr.java
@@ -130,7 +130,7 @@ public final class EntriesMgr {
      * @throws IOException   If the file was not found or could not be read.
      * @throws FeedException If an error occurred while reading the feed.
      */
-    @SuppressWarnings("unchecked")
+    @SuppressWarnings("PMD.AvoidInstantiatingObjectsInLoops")
     public static String loadEntries(final String file, final String channel, final List<EntryLink> entries)
         throws IOException, FeedException {
         entries.clear();
@@ -190,6 +190,7 @@ public final class EntriesMgr {
      * @param isDayBackup Set the true if the daily backup file should also be created.
      */
     @SuppressFBWarnings(value = {"CE_CLASS_ENVY", "CC_CYCLOMATIC_COMPLEXITY"}, justification = "Yes, it does.")
+    @SuppressWarnings("PMD.AvoidInstantiatingObjectsInLoops")
     public static void saveEntries(final Mobibot bot,
                                    final List<EntryLink> entries,
                                    final List<String> history,
diff --git a/src/main/java/net/thauvin/erik/mobibot/entries/EntryLink.java b/src/main/java/net/thauvin/erik/mobibot/entries/EntryLink.java
index 472367f..dec9fd7 100644
--- a/src/main/java/net/thauvin/erik/mobibot/entries/EntryLink.java
+++ b/src/main/java/net/thauvin/erik/mobibot/entries/EntryLink.java
@@ -292,7 +292,8 @@ public class EntryLink implements Serializable {
      *
      * @param tags The space-delimited tags.
      */
-    @SuppressFBWarnings(value = "STT_STRING_PARSING_A_FIELD")
+    @SuppressFBWarnings("STT_STRING_PARSING_A_FIELD")
+    @SuppressWarnings("PMD.AvoidInstantiatingObjectsInLoops")
     public final void setTags(final String tags) {
         if (tags != null) {
             final String[] parts = tags.replaceAll(", ", " ").replaceAll(",", " ").split(" ");
diff --git a/src/main/java/net/thauvin/erik/mobibot/modules/CurrencyConverter.java b/src/main/java/net/thauvin/erik/mobibot/modules/CurrencyConverter.java
index d1a3900..7e4a024 100644
--- a/src/main/java/net/thauvin/erik/mobibot/modules/CurrencyConverter.java
+++ b/src/main/java/net/thauvin/erik/mobibot/modules/CurrencyConverter.java
@@ -60,6 +60,7 @@ import java.util.TreeMap;
  * @created Feb 11, 2004
  * @since 1.0
  */
+@SuppressWarnings("PMD.UseConcurrentHashMap")
 public final class CurrencyConverter extends ThreadedModule {
     /**
      * The rates keyword.
diff --git a/src/main/java/net/thauvin/erik/mobibot/tell/TellMessage.java b/src/main/java/net/thauvin/erik/mobibot/tell/TellMessage.java
index 1c2cd4d..cc73893 100644
--- a/src/main/java/net/thauvin/erik/mobibot/tell/TellMessage.java
+++ b/src/main/java/net/thauvin/erik/mobibot/tell/TellMessage.java
@@ -44,6 +44,7 @@ import java.time.format.DateTimeFormatter;
  * @created 2014-04-24
  * @since 1.0
  */
+@SuppressWarnings("PMD.DataClass")
 public class TellMessage implements Serializable {
     private static final long serialVersionUID = 2L;
     private final String id;
diff --git a/src/test/java/net/thauvin/erik/mobibot/modules/LookupTest.java b/src/test/java/net/thauvin/erik/mobibot/modules/LookupTest.java
index 95288a5..d0d55f5 100644
--- a/src/test/java/net/thauvin/erik/mobibot/modules/LookupTest.java
+++ b/src/test/java/net/thauvin/erik/mobibot/modules/LookupTest.java
@@ -45,6 +45,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @created 2017-05-30
  * @since 1.0
  */
+@SuppressWarnings("PMD.AvoidUsingHardCodedIP")
 public class LookupTest {
     @Test
     public void testLookupImpl() {