diff --git a/app/components/PluginDetail.jsx b/app/components/PluginDetail.jsx
index a690fd33b..dd244c719 100644
--- a/app/components/PluginDetail.jsx
+++ b/app/components/PluginDetail.jsx
@@ -35,6 +35,7 @@ class PluginDetail extends React.PureComponent {
         name: PropTypes.string,
         title: PropTypes.string,
         optional: PropTypes.bool,
+        implied: PropTypes.bool,
         version: PropTypes.string
       })),
       excerpt: PropTypes.string,
@@ -111,11 +112,18 @@ class PluginDetail extends React.PureComponent {
       return (<div className="empty">No dependencies found</div>);
     }
 
-    return dependencies.sort((a, b) => a.optional === b.optional ? 0 : (a.optional ? 1 : -1)).map((dependency) => {
-      const required = !dependency.optional ? 'required' : 'optional';
+    return dependencies.sort((a, b) => a.implied === b.implied ? (a.optional === b.optional ? 0 : a.optional ? 1 : -1 ) : (a.implied ? 1 : -1)).map((dependency) => {
+      const kind = !dependency.optional ? (dependency.implied ? 'implied' : 'required') : 'optional';
+      if (kind === 'implied') {
+        return (
+          <div key={dependency.name} className={kind}>
+            <Link to={`/${dependency.name}`}>{dependency.title} v.{dependency.version} <span className="req">({kind})</span></Link> <a href="#" onClick={this.showImplied}><span className="req">(what&apos;s this?)</span></a>
+          </div>
+        );
+      }
       return (
-        <div key={dependency.name} className={required}>
-          <Link to={`/${dependency.name}`}>{dependency.title} v.{dependency.version} <span className="req">({required})</span></Link>
+        <div key={dependency.name} className={kind}>
+          <Link to={`/${dependency.name}`}>{dependency.title} v.{dependency.version} <span className="req">({kind})</span></Link>
         </div>
       );
     });
@@ -170,6 +178,38 @@ class PluginDetail extends React.PureComponent {
     this.warningsModal.show();
   }
 
+  showImplied = () => {
+    this.impliedModal.show();
+  }
+
+  getImpliedModal() {
+    return (
+      <div className="badge-box">
+        <ModalView hideOnOverlayClicked ignoreEscapeKey ref={(modal) => { this.impliedModal = modal; }}>
+          <Header>
+            <div>About Implied Plugin Dependencies</div>
+          </Header>
+          <Body>
+            <div>
+              <p>
+                Features are sometimes detached (or split off) from Jenkins core and moved into a plugin.
+                Many plugins, like Subversion or JUnit, started as features of Jenkins core.
+              </p>
+              <p>
+                Plugins that depend on a Jenkins core version before such a plugin was detached from core may or may not actually use any of its features.
+                To ensure that plugins don't break whenever functionality they depend on is detached from Jenkins core, it is considered to have a dependency on the detached plugin if it declares a dependency on a version of Jenkins core before the split.
+                Since that dependency to the detached plugin is not explicitly specified, it is <em>implied</em>.
+              </p>
+              <p>
+                Plugins that don't regularly update which Jenkins core version they depend on will accumulate implied dependencies over time.
+              </p>
+            </div>
+          </Body>
+        </ModalView>
+      </div>
+    );
+  }
+
   getActiveWarnings(securityWarnings) {
     if (!securityWarnings) {
       return null;
@@ -284,6 +324,7 @@ class PluginDetail extends React.PureComponent {
                   <h1 className="title">
                     {cleanTitle(plugin.title)}
                     {this.getActiveWarnings(plugin.securityWarnings)}
+                    {this.getImpliedModal()}
                     <span className="v">{plugin.version}</span>
                     <span className="sub">Minimum Jenkins requirement: {plugin.requiredCore}</span>
                     <span className="sub">ID: {plugin.name}</span>
