diff --git a/.build/build-resolver.xml b/.build/build-resolver.xml
index 5b95addb0d..c95dc1eb78 100644
--- a/.build/build-resolver.xml
+++ b/.build/build-resolver.xml
@@ -264,6 +264,9 @@
         <!-- as resolver will copy all dependencies into lib dir, and we are copying jars to lib/{x86_64|aarch64} as well, we would have duplicities -->
         <delete file="${build.lib}/AmazonCorrettoCryptoProvider-2.2.0-linux-x86_64.jar" failonerror="false"/>
         <delete file="${build.lib}/AmazonCorrettoCryptoProvider-2.2.0-linux-aarch_64.jar" failonerror="false"/>
+
+        <delete file="${build.lib}/netty-tcnative-boringssl-static-2.0.61.Final-windows-x86_64.jar" failonerror="false"/>
+        <delete file="${build.dir.lib}/jars/netty-tcnative-boringssl-static-2.0.61.Final-windows-x86_64.jar" failonerror="false"/>
     </target>
 
     <target name="_resolver-dist-lib_get_files">
diff --git a/.build/cassandra-deps-template.xml b/.build/cassandra-deps-template.xml
index 19ccac30be..ec36e5f09e 100644
--- a/.build/cassandra-deps-template.xml
+++ b/.build/cassandra-deps-template.xml
@@ -17,12 +17,11 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
-    <artifactId>cassandra-parent</artifactId>
     <groupId>org.apache.cassandra</groupId>
+    <artifactId>cassandra-parent</artifactId>
     <version>@version@</version>
     <relativePath>@final.name@-parent.pom</relativePath>
   </parent>
-  <groupId>org.apache.cassandra</groupId>
   <artifactId>cassandra-all</artifactId>
   <version>@version@</version>
   <name>Apache Cassandra</name>
@@ -172,12 +171,7 @@
     </dependency>
     <dependency>
       <groupId>org.bouncycastle</groupId>
-      <artifactId>bcpkix-jdk15on</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>io.netty</groupId>
-      <artifactId>netty-bom</artifactId>
-      <type>pom</type>
+      <artifactId>bcpkix-jdk18on</artifactId>
     </dependency>
     <dependency>
       <groupId>io.netty</groupId>
@@ -192,6 +186,15 @@
       <artifactId>netty-transport-native-epoll</artifactId>
       <classifier>linux-x86_64</classifier>
     </dependency>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-transport-native-epoll</artifactId>
+      <classifier>linux-aarch_64</classifier>
+    </dependency>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-tcnative-boringssl-static</artifactId>
+    </dependency>
 
     <!-- chronicle queue, and fixed transitive dependencies -->
     <dependency>
@@ -321,10 +324,6 @@
       <groupId>org.psjava</groupId>
       <artifactId>psjava</artifactId>
     </dependency>
-    <dependency>
-      <groupId>io.netty</groupId>
-      <artifactId>netty-tcnative-boringssl-static</artifactId>
-    </dependency>
     <dependency>
       <groupId>javax.inject</groupId>
       <artifactId>javax.inject</artifactId>
diff --git a/.build/parent-pom-template.xml b/.build/parent-pom-template.xml
index 30f518afe5..a7eb86664e 100644
--- a/.build/parent-pom-template.xml
+++ b/.build/parent-pom-template.xml
@@ -722,17 +722,76 @@
           </exclusion>
         </exclusions>
       </dependency>
-      <dependency>
-        <groupId>io.netty</groupId>
-        <artifactId>netty-bom</artifactId>
-        <version>4.1.96.Final</version>
-        <type>pom</type>
-        <scope>provided</scope>
-      </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
         <version>4.1.96.Final</version>
+        <exclusions>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-dns</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-haproxy</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-http2</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-http</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-memcache</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-mqtt</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-redis</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-smtp</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-socks</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-stomp</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-xml</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-transport-udt</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-transport-sctp</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-transport-rxtx</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-resolver-dns</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-resolver-dns-classes-macos</artifactId>
+          </exclusion>
+        </exclusions>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
@@ -741,20 +800,26 @@
       </dependency>
       <dependency>
         <groupId>org.bouncycastle</groupId>
-        <artifactId>bcpkix-jdk15on</artifactId>
-        <version>1.70</version>
+        <artifactId>bcpkix-jdk18on</artifactId>
+        <version>1.76</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.1.94.Final</version>
+        <version>4.1.96.Final</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.1.94.Final</version>
+        <version>4.1.96.Final</version>
         <classifier>linux-x86_64</classifier>
       </dependency>
+      <dependency>
+        <groupId>io.netty</groupId>
+        <artifactId>netty-transport-native-epoll</artifactId>
+        <version>4.1.96.Final</version>
+        <classifier>linux-aarch_64</classifier>
+      </dependency>
 
       <!-- chronicle-queue deps -->
       <dependency>
diff --git a/CHANGES.txt b/CHANGES.txt
index 2a5335ecf8..adf6371512 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,4 +1,5 @@
 5.0-alpha1
+ * Remove unnecessary Netty dependencies after upgrade to version 4.1.96 (CASSANDRA-18729)
  * Prevent InaccessibleObjectException when the Leak Detector is traversing objects (CASSANDRA-18708)
  * Remove legacy command line options from cassandra-stress (CASSANDRA-18529)
  * Remove commitlog_sync_batch_window_in_ms (CASSANDRA-17161)
diff --git a/src/java/org/apache/cassandra/utils/SigarLibrary.java b/src/java/org/apache/cassandra/utils/SigarLibrary.java
index 32987d83f7..830f7cab8e 100644
--- a/src/java/org/apache/cassandra/utils/SigarLibrary.java
+++ b/src/java/org/apache/cassandra/utils/SigarLibrary.java
@@ -23,6 +23,7 @@ import org.slf4j.Logger;
 
 import org.apache.cassandra.config.CassandraRelevantProperties;
 
+@Shared
 public class SigarLibrary
 {
     private Logger logger = LoggerFactory.getLogger(SigarLibrary.class);
diff --git a/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java b/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java
index 79120a2fed..785742afc4 100644
--- a/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java
+++ b/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java
@@ -191,6 +191,7 @@ public abstract class AbstractCluster<I extends IInstance> implements ICluster<I
             // those properties may be set for unit-test optimizations; those should not be used when running dtests
             CassandraRelevantProperties.TEST_FLUSH_LOCAL_SCHEMA_CHANGES.reset();
             CassandraRelevantProperties.NON_GRACEFUL_SHUTDOWN.reset();
+            CassandraRelevantProperties.NATIVE_EPOLL_ENABLED.setBoolean(false);
         }
 
         public AbstractBuilder(Factory<I, C, B> factory)