diff --git a/CONTRIBUTING.adoc b/CONTRIBUTING.adoc
index 833e30e9b..024019c9b 100644
--- a/CONTRIBUTING.adoc
+++ b/CONTRIBUTING.adoc
@@ -77,7 +77,7 @@ If you don't have an IDE preference we would recommend that you use IntellIJ.
 
 === Importing into IntelliJ IDEA
 
-If you have performed a checkout of this repository already, use "`File`" -> "`Open`" and then select the root `build.gradle` file to import the code.
+If you have performed a checkout of this repository already, use "`File`" -> "`Open`" and then select the root `pom.xml` file to import the code.
 
 Alternatively, you can let IntellIJ IDEA checkout the code for you.
 Use "`File`" ->
@@ -118,13 +118,14 @@ Projects can be imported without the plugins, your code changes just won't be au
 
 === Building from Source
 
-springdoc-openapi source can be built from the command line using https://maven.apache.org/[Maven] on JDK 1.8 or above.
+springdoc-openapi source can be built from the command line using https://maven.apache.org/[Maven].
+Install Maven and use JDK 21 to match the project's CI environment.
 
 The project can be built from the root directory using the standard maven command:
 
 [indent=0]
 ----
-	$ ./mvn install
+	$ mvn install
 ----
 
 == Cloning the git repository on Windows