diff --git a/docs/notes-3.7.txt b/docs/notes-3.7.txt
index d5bdd598d7..29f9cdecb0 100644
--- a/docs/notes-3.7.txt
+++ b/docs/notes-3.7.txt
@@ -107,6 +107,11 @@ New Features in Terminal Sessions:
   Settings > Profiles > Text.
 
 Tabs, Windows, and UI:
+- Closing a pinned tab now requires
+  confirmation, whether via the close
+  button, middle-click, ⌘W, or quitting
+  the app. The dialog identifies the tab
+  as pinned so the prompt is clear.
 - The control-sequence-controlled progress
   indicator is now shown in the tab bar.
 - An active pane border can be displayed to
diff --git a/sources/AppShutdown/iTermPromptOnCloseReason.h b/sources/AppShutdown/iTermPromptOnCloseReason.h
index 5646589a5b..38673cf71a 100644
--- a/sources/AppShutdown/iTermPromptOnCloseReason.h
+++ b/sources/AppShutdown/iTermPromptOnCloseReason.h
@@ -22,6 +22,7 @@
 + (instancetype)closingMultipleSessionsPreferenceEnabled;
 + (instancetype)tmuxClientsAlwaysPromptBecauseJobsAreNotExposed;
 + (instancetype)sessionIsLocked;
++ (instancetype)tabIsPinned;
 
 - (void)addReason:(iTermPromptOnCloseReason *)reason;
 
diff --git a/sources/AppShutdown/iTermPromptOnCloseReason.m b/sources/AppShutdown/iTermPromptOnCloseReason.m
index 54b042029e..f731bf89b4 100644
--- a/sources/AppShutdown/iTermPromptOnCloseReason.m
+++ b/sources/AppShutdown/iTermPromptOnCloseReason.m
@@ -238,6 +238,10 @@ + (instancetype)sessionIsLocked {
     return [[[iTermPromptOnCloseMessageReason alloc] initWithMessage:@"This pane is locked." priority:75] autorelease];
 }
 
++ (instancetype)tabIsPinned {
+    return [[[iTermPromptOnCloseMessageReason alloc] initWithMessage:@"A pinned tab is open." priority:70] autorelease];
+}
+
 - (BOOL)hasReason {
     return YES;
 }
diff --git a/sources/TerminalView/PseudoTerminal.m b/sources/TerminalView/PseudoTerminal.m
index d311103262..ff29804fd2 100644
--- a/sources/TerminalView/PseudoTerminal.m
+++ b/sources/TerminalView/PseudoTerminal.m
@@ -1941,14 +1941,21 @@ - (BOOL)confirmCloseTab:(PTYTab *)aTab suppressConfirmation:(BOOL)suppressConfir
         const BOOL anyIsLocked = [[aTab sessions] anyWithBlock:^BOOL(PTYSession *anObject) {
             return anObject.locked;
         }];
+        NSString *const pinnedPrefix = aTab.isPinned ? @"pinned " : @"";
         if (numClosing == 1) {
+            NSString *const identifier = anyIsLocked
+                ? [NSString stringWithFormat:@"This %@tab (with a locked session)", pinnedPrefix]
+                : [NSString stringWithFormat:@"This %@tab", pinnedPrefix];
             okToClose = [self confirmCloseForSessions:[aTab sessions]
-                                           identifier:anyIsLocked ? @"This tab (with a locked session)" : @"This tab"
+                                           identifier:identifier
                                           genericName:[NSString stringWithFormat:@"tab #%d",
                                                        [aTab tabNumber]]];
         } else {
+            NSString *const identifier = anyIsLocked
+                ? [NSString stringWithFormat:@"This %@multi-pane tab (with locked sessions)", pinnedPrefix]
+                : [NSString stringWithFormat:@"This %@multi-pane tab", pinnedPrefix];
             okToClose = [self confirmCloseForSessions:[aTab sessions]
-                                           identifier:anyIsLocked ? @"This multi-pane tab (with locked sessions)" : @"This multi-pane tab"
+                                           identifier:identifier
                                           genericName:[NSString stringWithFormat:@"tab #%d",
                                                        [aTab tabNumber]]];
         }
@@ -4175,6 +4182,12 @@ - (iTermPromptOnCloseReason *)promptOnCloseReason {
     for (PTYSession *aSession in [self allSessions]) {
         [reason addReason:[aSession promptOnCloseReason]];
     }
+    for (PTYTab *tab in self.tabs) {
+        if (tab.isPinned) {
+            [reason addReason:[iTermPromptOnCloseReason tabIsPinned]];
+            break;
+        }
+    }
     return reason;
 }