diff --git a/docs/changelog/131435.yaml b/docs/changelog/131435.yaml
new file mode 100644
index 0000000000000..45e16dc2ae30e
--- /dev/null
+++ b/docs/changelog/131435.yaml
@@ -0,0 +1,5 @@
+pr: 131435
+summary: Drop unused plugin declaration `com.gradleup.nmcp.aggregation`
+area: build.versions.toml
+type: chore
+issues: []
diff --git a/gradle/build.versions.toml b/gradle/build.versions.toml
index bf0e6873f9073..52e9b74a90416 100644
--- a/gradle/build.versions.toml
+++ b/gradle/build.versions.toml
@@ -51,4 +51,3 @@ xmlunit-core = "org.xmlunit:xmlunit-core:2.8.2"
 
 [plugins]
 ospackage = { id = "com.netflix.nebula.ospackage-base", version = "11.11.2" }
-nmcp-aggregation = { id = "com.gradleup.nmcp.aggregation", version.ref="nmcp" }