diff --git a/sources/package-lock.json b/sources/package-lock.json
index bfb30b0d..c06a431c 100644
--- a/sources/package-lock.json
+++ b/sources/package-lock.json
@@ -17,6 +17,7 @@
         "@actions/glob": "0.6.1",
         "@actions/http-client": "4.0.0",
         "@actions/tool-cache": "4.0.0",
+        "@octokit/graphql-schema": "15.26.1",
         "@octokit/webhooks-types": "7.6.1",
         "cheerio": "1.2.0",
         "semver": "7.7.4",
@@ -2403,6 +2404,16 @@
         "node": ">= 18"
       }
     },
+    "node_modules/@octokit/graphql-schema": {
+      "version": "15.26.1",
+      "resolved": "https://registry.npmjs.org/@octokit/graphql-schema/-/graphql-schema-15.26.1.tgz",
+      "integrity": "sha512-RFDC2MpRBd4AxSRvUeBIVeBU7ojN/SxDfALUd7iVYOSeEK3gZaqR2MGOysj4Zh2xj2RY5fQAUT+Oqq7hWTraMA==",
+      "license": "MIT",
+      "dependencies": {
+        "graphql": "^16.0.0",
+        "graphql-tag": "^2.10.3"
+      }
+    },
     "node_modules/@octokit/graphql/node_modules/@octokit/openapi-types": {
       "version": "24.2.0",
       "resolved": "https://registry.npmjs.org/@octokit/openapi-types/-/openapi-types-24.2.0.tgz",
@@ -5590,6 +5601,30 @@
       "integrity": "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==",
       "license": "ISC"
     },
+    "node_modules/graphql": {
+      "version": "16.13.1",
+      "resolved": "https://registry.npmjs.org/graphql/-/graphql-16.13.1.tgz",
+      "integrity": "sha512-gGgrVCoDKlIZ8fIqXBBb0pPKqDgki0Z/FSKNiQzSGj2uEYHr1tq5wmBegGwJx6QB5S5cM0khSBpi/JFHMCvsmQ==",
+      "license": "MIT",
+      "engines": {
+        "node": "^12.22.0 || ^14.16.0 || ^16.0.0 || >=17.0.0"
+      }
+    },
+    "node_modules/graphql-tag": {
+      "version": "2.12.6",
+      "resolved": "https://registry.npmjs.org/graphql-tag/-/graphql-tag-2.12.6.tgz",
+      "integrity": "sha512-FdSNcu2QQcWnM2VNvSCCDCVS5PpPqpzgFT8+GXzqJuoDd0CBncxCY278u4mhRO7tMgo2JjgJA5aZ+nWSQ/Z+xg==",
+      "license": "MIT",
+      "dependencies": {
+        "tslib": "^2.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "peerDependencies": {
+        "graphql": "^0.9.0 || ^0.10.0 || ^0.11.0 || ^0.12.0 || ^0.13.0 || ^14.0.0 || ^15.0.0 || ^16.0.0"
+      }
+    },
     "node_modules/handlebars": {
       "version": "4.7.9",
       "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.9.tgz",
diff --git a/sources/package.json b/sources/package.json
index 4f21bc02..3453eb05 100644
--- a/sources/package.json
+++ b/sources/package.json
@@ -43,6 +43,7 @@
     "@actions/glob": "0.6.1",
     "@actions/http-client": "4.0.0",
     "@actions/tool-cache": "4.0.0",
+    "@octokit/graphql-schema": "15.26.1",
     "@octokit/webhooks-types": "7.6.1",
     "cheerio": "1.2.0",
     "semver": "7.7.4",
diff --git a/sources/src/configuration.ts b/sources/src/configuration.ts
index 3e519e49..d698efbf 100644
--- a/sources/src/configuration.ts
+++ b/sources/src/configuration.ts
@@ -206,6 +206,10 @@ export class SummaryConfig {
         return this.shouldAddJobSummary(this.getJobSummaryOption(), hasFailure)
     }
 
+    canAddPRComment(): boolean {
+        return this.getPRCommentOption() !== JobSummaryOption.Never
+    }
+
     shouldAddPRComment(hasFailure: boolean): boolean {
         return this.shouldAddJobSummary(this.getPRCommentOption(), hasFailure)
     }
diff --git a/sources/src/job-summary.ts b/sources/src/job-summary.ts
index 08d53ca7..2cde75c3 100644
--- a/sources/src/job-summary.ts
+++ b/sources/src/job-summary.ts
@@ -1,8 +1,9 @@
 import * as core from '@actions/core'
 import * as github from '@actions/github'
+import {Repository} from '@octokit/graphql-schema'
 
 import {BuildResult} from './build-results'
-import {SummaryConfig, getActionId, getGithubToken} from './configuration'
+import {DependencyGraphConfig, getActionId, getGithubToken, getJobMatrix, SummaryConfig} from './configuration'
 import {Deprecation, getDeprecations, getErrors} from './deprecation-collector'
 
 export async function generateJobSummary(
@@ -33,6 +34,10 @@ export async function generateJobSummary(
         core.info('============================')
     }
 
+    if (config.canAddPRComment()) {
+        await minimizeObsoletePRComments()
+    }
+
     if (config.shouldAddPRComment(hasFailure)) {
         await addPRComment(summaryTable)
     }
@@ -48,7 +53,8 @@ async function addPRComment(jobSummary: string): Promise<void> {
     const pull_request_number = context.payload.pull_request.number
     core.info(`Adding Job Summary as comment to PR #${pull_request_number}.`)
 
-    const prComment = `<h3>Job Summary for Gradle</h3>
+    const prComment = `${jobMarker(context)}
+<h3>Job Summary for Gradle</h3>
 <a href="${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}" target="_blank">
 <h5>${context.workflow} :: <em>${context.job}</em></h5>
 </a>
@@ -57,6 +63,7 @@ ${jobSummary}`
 
     const github_token = getGithubToken()
     const octokit = github.getOctokit(github_token)
+
     try {
         await octokit.rest.issues.createComment({
             ...context.repo,
@@ -201,3 +208,60 @@ function truncateString(str: string, maxLength: number): string {
         return str
     }
 }
+
+async function minimizeObsoletePRComments(): Promise<void> {
+    const context = github.context
+    if (context.payload.pull_request == null) {
+        core.info('No pull_request trigger detected: not minimizing obsolete PR comments')
+        return
+    }
+
+    const prNumber = context.payload.pull_request.number
+    core.info(`Minimizing obsolete Job Summary comments on PR #${prNumber}.`)
+
+    const marker = jobMarker(context)
+    const octokit = github.getOctokit(getGithubToken())
+    const {owner, repo} = context.repo
+
+    const query = `
+    query($owner: String!, $repo: String!, $prNumber: Int!) {
+      repository(owner: $owner, name: $repo) {
+        pullRequest(number: $prNumber) {
+          comments(last: 100) {
+            nodes { id body isMinimized url }
+          }
+        }
+      }
+    }
+  `
+    let comments
+    try {
+        const {repository} = await octokit.graphql<{repository: Repository}>(query, {owner, repo, prNumber})
+        comments = repository.pullRequest?.comments?.nodes?.filter((c): c is NonNullable<typeof c> => c !== null) ?? []
+    } catch (error) {
+        return core.warning(`Failed to fetch comments: ${error}`)
+    }
+
+    const mutation = `
+    mutation($id: ID!) {
+      minimizeComment(input: {subjectId: $id, classifier: OUTDATED}) {
+        clientMutationId
+      }
+    }
+  `
+
+    const commentsToMinimize = comments
+        .filter(c => !c.isMinimized && c.body.includes(marker))
+        .map(async c =>
+            octokit
+                .graphql(mutation, {id: c.id})
+                .then(() => core.info(`Successfully minimized (id:${c.id}, url:${c.url})`))
+                .catch(e => core.warning(`Failed to minimize (id:${c.id}, url:${c.url}, error:${e?.message || e})`))
+        )
+    await Promise.allSettled(commentsToMinimize)
+}
+
+function jobMarker(context: typeof github.context): string {
+    const jobCorrelator = DependencyGraphConfig.constructJobCorrelator(context.workflow, context.job, getJobMatrix())
+    return `<!-- gradle-job-summary: ${jobCorrelator} -->`
+}