diff --git a/buildtools/pom.xml b/buildtools/pom.xml
index fff5a9bd4685b..9897b5e109bdc 100644
--- a/buildtools/pom.xml
+++ b/buildtools/pom.xml
@@ -269,6 +269,18 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <artifactId>maven-gpg-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>sign-artifacts</id>
+            <phase>verify</phase>
+            <goals>
+              <goal>sign</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
     <extensions>
       <extension>
diff --git a/download/pulsar_functions/function15966267003425740315.tmp b/download/pulsar_functions/function15966267003425740315.tmp
deleted file mode 100644
index e69de29bb2d1d..0000000000000
diff --git a/download/pulsar_functions/function17315915668425371952.tmp b/download/pulsar_functions/function17315915668425371952.tmp
deleted file mode 100644
index e69de29bb2d1d..0000000000000
diff --git a/pom.xml b/pom.xml
index 9f651bb078ee5..ac86f69d1d715 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2302,6 +2302,31 @@ flexible messaging model and an intuitive client API.</description>
         <os.detected.classifier>osx-x86_64</os.detected.classifier>
       </properties>
     </profile>
+    <profile>
+      <id>release-sign-artifacts</id>
+      <activation>
+        <property>
+          <name>performRelease</name>
+          <value>true</value>
+        </property>
+      </activation>
+      <build>
+        <plugins>
+          <plugin>
+            <artifactId>maven-gpg-plugin</artifactId>
+            <executions>
+              <execution>
+                <id>sign-artifacts</id>
+                <phase>verify</phase>
+                <goals>
+                  <goal>sign</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
   </profiles>
   <repositories>
     <repository>