diff --git a/docs/changes/README.md b/docs/changes/README.md
index d5e5890f9..563668fe1 100644
--- a/docs/changes/README.md
+++ b/docs/changes/README.md
@@ -3,6 +3,9 @@
 
 ## [Unreleased](https://github.com/GradleUp/shadow/compare/9.0.0-beta16...HEAD) - 2025-xx-xx
 
+**Fixed**
+
+- Fix compatibility for Gradle 9.0.0 RC1. ([#1468](https://github.com/GradleUp/shadow/pull/1468))
 
 ## [9.0.0-beta16](https://github.com/GradleUp/shadow/releases/tag/9.0.0-beta16) - 2025-06-14
 
diff --git a/gradle/lint-baseline.xml b/gradle/lint-baseline.xml
index f491065a3..9ed89eb90 100644
--- a/gradle/lint-baseline.xml
+++ b/gradle/lint-baseline.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<issues format="6" by="lint 8.10.0" type="baseline" client="gradle" dependencies="false" name="AGP (8.10.0)" variant="all" version="8.10.0">
+<issues format="6" by="lint 8.10.1" type="baseline" client="gradle" dependencies="false" name="AGP (8.10.1)" variant="all" version="8.10.1">
 
     <issue
         id="InternalGradleApiUsage"
@@ -151,7 +151,7 @@
         errorLine2="~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
         <location
             file="src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/tasks/ShadowJar.kt"
-            line="35"
+            line="34"
             column="1"/>
     </issue>
 
@@ -162,7 +162,7 @@
         errorLine2="~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
         <location
             file="src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/tasks/ShadowJar.kt"
-            line="36"
+            line="35"
             column="1"/>
     </issue>
 
@@ -173,7 +173,7 @@
         errorLine2="                                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
         <location
             file="src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/tasks/ShadowJar.kt"
-            line="62"
+            line="61"
             column="39"/>
     </issue>
 
@@ -184,7 +184,7 @@
         errorLine2="                                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
         <location
             file="src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/tasks/ShadowJar.kt"
-            line="62"
+            line="61"
             column="39"/>
     </issue>
 
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 1b33c55ba..8bdaf60c7 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index ff23a68d7..407c905d9 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-rc-1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index 23d15a936..ef07e0162 100755
--- a/gradlew
+++ b/gradlew
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/internal/GradleCompat.kt b/src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/internal/GradleCompat.kt
index e7e7299b8..c77a97790 100644
--- a/src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/internal/GradleCompat.kt
+++ b/src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/internal/GradleCompat.kt
@@ -104,7 +104,6 @@ internal fun ProjectDependency.dependencyProjectCompat(project: Project): Projec
   return if (GradleVersion.current() >= GradleVersion.version("8.11")) {
     project.project(path)
   } else {
-    @Suppress("DEPRECATION")
-    dependencyProject
+    return this::class.java.getDeclaredMethod("getDependencyProject").invoke(this) as Project
   }
 }
diff --git a/src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/tasks/ShadowJar.kt b/src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/tasks/ShadowJar.kt
index dd00a5c41..f4be0c5dd 100644
--- a/src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/tasks/ShadowJar.kt
+++ b/src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/tasks/ShadowJar.kt
@@ -27,7 +27,6 @@ import kotlin.reflect.full.hasAnnotation
 import org.apache.tools.zip.Zip64Mode
 import org.apache.tools.zip.ZipOutputStream
 import org.gradle.api.Action
-import org.gradle.api.UncheckedIOException
 import org.gradle.api.artifacts.Configuration
 import org.gradle.api.file.ArchiveOperations
 import org.gradle.api.file.ConfigurableFileCollection
@@ -330,7 +329,7 @@ public abstract class ShadowJar :
           setMethod(entryCompressionMethod)
         }
       } catch (e: Exception) {
-        throw UncheckedIOException("Unable to create ZIP output stream for file $destination.", e)
+        throw IOException("Unable to create ZIP output stream for file $destination.", e)
       }
     }
     val unusedClasses = if (minimizeJar.get()) {