diff --git a/src/main/groovy/com/netflix/gradle/plugins/deb/Deb.groovy b/src/main/groovy/com/netflix/gradle/plugins/deb/Deb.groovy
index 2d329df1..ab56454a 100755
--- a/src/main/groovy/com/netflix/gradle/plugins/deb/Deb.groovy
+++ b/src/main/groovy/com/netflix/gradle/plugins/deb/Deb.groovy
@@ -21,10 +21,12 @@ import com.netflix.gradle.plugins.packaging.Dependency
 import com.netflix.gradle.plugins.packaging.SystemPackagingTask
 import org.gradle.api.internal.ConventionMapping
 import org.gradle.api.internal.IConventionAware
+import org.gradle.api.tasks.CacheableTask
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.Optional
 import org.gradle.api.tasks.OutputFile
 
+@CacheableTask
 class Deb extends SystemPackagingTask {
     Deb() {
         super()
diff --git a/src/main/groovy/com/netflix/gradle/plugins/packaging/SystemPackagingExtension.groovy b/src/main/groovy/com/netflix/gradle/plugins/packaging/SystemPackagingExtension.groovy
index 79eb8883..2456bdc3 100755
--- a/src/main/groovy/com/netflix/gradle/plugins/packaging/SystemPackagingExtension.groovy
+++ b/src/main/groovy/com/netflix/gradle/plugins/packaging/SystemPackagingExtension.groovy
@@ -4,6 +4,8 @@ import com.netflix.gradle.plugins.deb.control.MultiArch
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.InputFile
 import org.gradle.api.tasks.Optional
+import org.gradle.api.tasks.PathSensitive
+import org.gradle.api.tasks.PathSensitivity
 import org.redline_rpm.header.Architecture
 import org.redline_rpm.header.Os
 import org.redline_rpm.header.RpmType
@@ -47,7 +49,7 @@ class SystemPackagingExtension {
     @Input @Optional
     String signingKeyPassphrase
 
-    @InputFile @Optional
+    @InputFile @Optional @PathSensitive(PathSensitivity.RELATIVE)
     File signingKeyRingFile
 
     // Metadata, some are probably specific to a type
@@ -158,13 +160,13 @@ class SystemPackagingExtension {
 
     // Scripts
 
-    @InputFile @Optional
+    @InputFile @Optional @PathSensitive(PathSensitivity.RELATIVE)
     File preInstallFile
-    @InputFile @Optional
+    @InputFile @Optional @PathSensitive(PathSensitivity.RELATIVE)
     File postInstallFile
-    @InputFile @Optional
+    @InputFile @Optional @PathSensitive(PathSensitivity.RELATIVE)
     File preUninstallFile
-    @InputFile @Optional
+    @InputFile @Optional @PathSensitive(PathSensitivity.RELATIVE)
     File postUninstallFile
 
     final List<Object> configurationFiles = []
diff --git a/src/main/groovy/com/netflix/gradle/plugins/packaging/SystemPackagingTask.groovy b/src/main/groovy/com/netflix/gradle/plugins/packaging/SystemPackagingTask.groovy
index df4f4191..826b17af 100755
--- a/src/main/groovy/com/netflix/gradle/plugins/packaging/SystemPackagingTask.groovy
+++ b/src/main/groovy/com/netflix/gradle/plugins/packaging/SystemPackagingTask.groovy
@@ -284,6 +284,7 @@ abstract class SystemPackagingTask extends AbstractArchiveTask {
      * @return Collection of files
      */
     @InputFiles
+    @PathSensitive(PathSensitivity.RELATIVE)
     @SkipWhenEmpty
     private final FileCollection getFakeFiles() {
         project.files('fake')
diff --git a/src/main/groovy/com/netflix/gradle/plugins/rpm/Rpm.groovy b/src/main/groovy/com/netflix/gradle/plugins/rpm/Rpm.groovy
index 99f08dd8..79c0ba9f 100755
--- a/src/main/groovy/com/netflix/gradle/plugins/rpm/Rpm.groovy
+++ b/src/main/groovy/com/netflix/gradle/plugins/rpm/Rpm.groovy
@@ -18,17 +18,20 @@ package com.netflix.gradle.plugins.rpm
 
 import com.netflix.gradle.plugins.packaging.AbstractPackagingCopyAction
 import com.netflix.gradle.plugins.packaging.SystemPackagingTask
-import org.gradle.api.tasks.Input
-import org.gradle.api.tasks.InputFile;
+import org.gradle.api.tasks.CacheableTask
+import org.gradle.api.tasks.InputFile
 import org.gradle.api.tasks.Optional
+import org.gradle.api.tasks.PathSensitive
+import org.gradle.api.tasks.PathSensitivity
 import org.redline_rpm.header.Architecture
 import org.redline_rpm.header.Os
 import org.redline_rpm.header.RpmType
 import org.gradle.api.internal.ConventionMapping
 import org.gradle.api.internal.IConventionAware
 
+@CacheableTask
 class Rpm extends SystemPackagingTask {
-    @InputFile @Optional
+    @InputFile @Optional @PathSensitive(PathSensitivity.RELATIVE)
     File changeLogFile
 
     Rpm() {