diff --git a/buildpack.toml b/buildpack.toml
index 0902497..daacec1 100644
--- a/buildpack.toml
+++ b/buildpack.toml
@@ -128,6 +128,8 @@ api = "0.7"
     name = "Apache Maven"
     purl = "pkg:generic/apache-maven@4.0.0"
     sha256 = "6fe1c67d451482c6b2f7f0c9e2ec2693460f55749364fcce5b019c87107ced2e"
+    source = "https://repo1.maven.org/maven2/org/apache/maven/apache-maven/4.0.0-alpha-7/apache-maven-4.0.0-alpha-7-src.tar.gz"
+    source-sha256 = "e52d2ea5b58d74e1b1a9bb584ec5e173ce121f06cbaf1543adea959c2b2fdf42"
     stacks = ["io.buildpacks.stacks.bionic", "io.paketo.stacks.tiny", "*"]
     uri = "https://repo1.maven.org/maven2/org/apache/maven/apache-maven/4.0.0-alpha-7/apache-maven-4.0.0-alpha-7-bin.tar.gz"
     version = "4.0.0"