diff --git a/src/docs/publishing/README.md b/src/docs/publishing/README.md
index 9b8068307..e2aadc75d 100644
--- a/src/docs/publishing/README.md
+++ b/src/docs/publishing/README.md
@@ -16,7 +16,7 @@ apply plugin: 'com.github.johnrengelman.shadow'
 publishing {
   publications {
     shadow(MavenPublication) { publication ->
-      project.shadow.component(project, publication)
+      project.shadow.component(publication)
     }
   }
   repositories {
diff --git a/src/main/groovy/com/github/jengelman/gradle/plugins/shadow/ShadowBasePlugin.groovy b/src/main/groovy/com/github/jengelman/gradle/plugins/shadow/ShadowBasePlugin.groovy
index c8e3ea1d7..1f7a3a7d4 100644
--- a/src/main/groovy/com/github/jengelman/gradle/plugins/shadow/ShadowBasePlugin.groovy
+++ b/src/main/groovy/com/github/jengelman/gradle/plugins/shadow/ShadowBasePlugin.groovy
@@ -16,7 +16,7 @@ class ShadowBasePlugin implements Plugin<Project> {
         if (GradleVersion.current() < GradleVersion.version("8.0")) {
             throw new GradleException("This version of Shadow supports Gradle 8.0+ only. Please upgrade.")
         }
-        project.extensions.create(EXTENSION_NAME, ShadowExtension)
+        project.extensions.create(EXTENSION_NAME, ShadowExtension, project)
         createShadowConfiguration(project)
 
         project.tasks.register(KnowsTask.NAME, KnowsTask) { knows ->
diff --git a/src/main/groovy/com/github/jengelman/gradle/plugins/shadow/ShadowExtension.groovy b/src/main/groovy/com/github/jengelman/gradle/plugins/shadow/ShadowExtension.groovy
index 9aa65c3f5..865b3a3e1 100644
--- a/src/main/groovy/com/github/jengelman/gradle/plugins/shadow/ShadowExtension.groovy
+++ b/src/main/groovy/com/github/jengelman/gradle/plugins/shadow/ShadowExtension.groovy
@@ -1,33 +1,38 @@
 package com.github.jengelman.gradle.plugins.shadow
 
+import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 import org.gradle.api.Project
 import org.gradle.api.artifacts.ProjectDependency
 import org.gradle.api.artifacts.SelfResolvingDependency
+import org.gradle.api.file.RegularFile
+import org.gradle.api.provider.Provider
 import org.gradle.api.publish.maven.MavenPom
 import org.gradle.api.publish.maven.MavenPublication
-import org.gradle.util.GradleVersion
 
 class ShadowExtension {
+    private final Provider<Provider<RegularFile>> archiveFile
+    private final Provider<List<Dep>> allDependencies
 
-    void component(Project project, MavenPublication publication) {
-
-        if (GradleVersion.current() >= GradleVersion.version("6.6")) {
-            publication.artifact(project.tasks.named("shadowJar"))
-        } else {
-            publication.artifact(project.tasks.shadowJar)
-        }
-
-        final def allDependencies = project.provider {
-            project.configurations.shadow.allDependencies.collect {
-                if ((it instanceof ProjectDependency) || ! (it instanceof SelfResolvingDependency)) {
+    ShadowExtension(Project project) {
+        archiveFile = project.provider { project.tasks.withType(ShadowJar).getByName("shadowJar").archiveFile }
+        allDependencies = project.provider {
+            project.configurations.getByName("shadow").allDependencies.collect {
+                if ((it instanceof ProjectDependency) || !(it instanceof SelfResolvingDependency)) {
                     new Dep(it.group, it.name, it.version)
                 }
             }
         }
+    }
+
+    void component(MavenPublication publication) {
+        publication.artifact(archiveFile.get())
+
+        // Don't inline this variable, it seems Groovy closure capturing is confused by the field instead of a local variable.
+        final def allDeps = allDependencies
         publication.pom { MavenPom pom ->
             pom.withXml { xml ->
                 def dependenciesNode = xml.asNode().get('dependencies') ?: xml.asNode().appendNode('dependencies')
-                allDependencies.get().each {
+                allDeps.get().each {
                     def dependencyNode = dependenciesNode.appendNode('dependency')
                     dependencyNode.appendNode('groupId', it.group)
                     dependencyNode.appendNode('artifactId', it.name)
diff --git a/src/test/groovy/com/github/jengelman/gradle/plugins/shadow/PublishingSpec.groovy b/src/test/groovy/com/github/jengelman/gradle/plugins/shadow/PublishingSpec.groovy
index 2f0a68153..7ea155900 100644
--- a/src/test/groovy/com/github/jengelman/gradle/plugins/shadow/PublishingSpec.groovy
+++ b/src/test/groovy/com/github/jengelman/gradle/plugins/shadow/PublishingSpec.groovy
@@ -42,7 +42,7 @@ class PublishingSpec extends PluginSpecification {
             publishing {
                publications {
                    shadow(MavenPublication) { publication ->
-                       project.shadow.component(project, publication)
+                       project.shadow.component(publication)
                        artifactId = 'maven-all'
                    }
                }
@@ -144,7 +144,7 @@ class PublishingSpec extends PluginSpecification {
             publishing {
                publications {
                    shadow(MavenPublication) { publication ->
-                       project.shadow.component(project, publication)
+                       project.shadow.component(publication)
                        artifactId = 'maven-all'
                    }
                }