diff --git a/build.gradle b/build.gradle
index 70ff99a..0e6582c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -30,7 +30,7 @@ if (JavaVersion.current() <= JavaVersion.VERSION_22) {
 repositories {
   mavenLocal()
   mavenCentral()
-  maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
+  maven { url = 'https://oss.sonatype.org/content/repositories/snapshots/' }
 }
 
 ext {
@@ -67,7 +67,7 @@ if (! isJava21orHigher) {
 
       // define the steps to apply to those files
       trimTrailingWhitespace()
-      indentWithSpaces(2)
+      indentWithSpaces(2) // in Spotless version 7, change to: leadingTabsToSpaces(2)
       endWithNewline()
     }
     java {
@@ -78,7 +78,7 @@ if (! isJava21orHigher) {
     groovyGradle {
       target '**/*.gradle'
       greclipse()  // which formatter Spotless should use to format .gradle files.
-      indentWithSpaces(2)
+      indentWithSpaces(2) // in Spotless version 7, change to: leadingTabsToSpaces(2)
       trimTrailingWhitespace()
       // endWithNewline() // Don't want to end empty files with a newline
     }
@@ -182,7 +182,7 @@ javadoc {
 check.dependsOn javadoc
 
 task javadocWeb(type: Javadoc) {
-  description 'Upload API documentation to website.'
+  description = 'Upload API documentation to website.'
   source = sourceSets.main.allJava
   destinationDir = file("/cse/web/research/plumelib/${project.name}/api")
   classpath = project.sourceSets.main.compileClasspath
@@ -226,6 +226,6 @@ check.dependsOn requireJavadoc
 
 /* Make Emacs TAGS table */
 task tags(type: Exec) {
-  description 'Run etags to create an Emacs TAGS table'
+  description = 'Run etags to create an Emacs TAGS table'
   commandLine 'bash', '-c', "find src/ -name '*.java' | sort | xargs etags"
 }
diff --git a/gradle/mavencentral.gradle b/gradle/mavencentral.gradle
index 1ccc8e1..2c23d78 100644
--- a/gradle/mavencentral.gradle
+++ b/gradle/mavencentral.gradle
@@ -21,8 +21,8 @@
 apply plugin: 'maven-publish'
 apply plugin: 'signing'
 
-group 'org.plumelib'
-version '1.0.9'
+group = 'org.plumelib'
+version = '1.0.9'
 ext {
   packageName = 'require-javadoc'
 }