diff --git a/src/cargo/ops/tree/format/mod.rs b/src/cargo/ops/tree/format/mod.rs
index c1d8892c831..eef9cba1f77 100644
--- a/src/cargo/ops/tree/format/mod.rs
+++ b/src/cargo/ops/tree/format/mod.rs
@@ -66,7 +66,18 @@ impl<'a> fmt::Display for Display<'a> {
                     match chunk {
                         Chunk::Raw(s) => fmt.write_str(s)?,
                         Chunk::Package => {
-                            write!(fmt, "{} v{}", package.name(), package.version())?;
+                            let proc_macro_suffix = if package.proc_macro() {
+                                " (proc-macro)"
+                            } else {
+                                ""
+                            };
+                            write!(
+                                fmt,
+                                "{} v{}{}",
+                                package.name(),
+                                package.version(),
+                                proc_macro_suffix
+                            )?;
 
                             let source_id = package.package_id().source_id();
                             if !source_id.is_default_registry() {
diff --git a/tests/testsuite/tree.rs b/tests/testsuite/tree.rs
index 9d3ded9888c..f88194256b1 100644
--- a/tests/testsuite/tree.rs
+++ b/tests/testsuite/tree.rs
@@ -379,7 +379,7 @@ fn filters_target() {
             "\
 foo v0.1.0 ([..]/foo)
 ├── hostdep v1.0.0
-└── pm_host v1.0.0
+└── pm_host v1.0.0 (proc-macro)
 [build-dependencies]
 └── build_host_dep v1.0.0
     └── hostdep v1.0.0
@@ -392,7 +392,7 @@ foo v0.1.0 ([..]/foo)
         .with_stdout(
             "\
 foo v0.1.0 ([..]/foo)
-├── pm_target v1.0.0
+├── pm_target v1.0.0 (proc-macro)
 └── targetdep v1.0.0
 [build-dependencies]
 └── build_host_dep v1.0.0
@@ -409,7 +409,7 @@ foo v0.1.0 ([..]/foo)
             "\
 foo v0.1.0 ([..]/foo)
 ├── hostdep v1.0.0
-└── pm_host v1.0.0
+└── pm_host v1.0.0 (proc-macro)
 [build-dependencies]
 └── build_host_dep v1.0.0
     └── hostdep v1.0.0
@@ -422,8 +422,8 @@ foo v0.1.0 ([..]/foo)
             "\
 foo v0.1.0 ([..]/foo)
 ├── hostdep v1.0.0
-├── pm_host v1.0.0
-├── pm_target v1.0.0
+├── pm_host v1.0.0 (proc-macro)
+├── pm_target v1.0.0 (proc-macro)
 └── targetdep v1.0.0
 [build-dependencies]
 ├── build_host_dep v1.0.0
@@ -1211,7 +1211,7 @@ fn proc_macro_features() {
         .with_stdout(
             "\
 foo v0.1.0 ([..]/foo)
-├── pm v1.0.0
+├── pm v1.0.0 (proc-macro)
 │   └── somedep v1.0.0
 │       └── optdep v1.0.0
 └── somedep v1.0.0 (*)
@@ -1225,7 +1225,7 @@ foo v0.1.0 ([..]/foo)
         .with_stdout(
             "\
 foo v0.1.0 ([..]/foo)
-├── pm v1.0.0
+├── pm v1.0.0 (proc-macro)
 │   └── somedep v1.0.0
 │       └── optdep v1.0.0
 └── somedep v1.0.0
@@ -1261,7 +1261,7 @@ somedep v1.0.0
             "\
 somedep v1.0.0
 ├── foo v0.1.0 ([..]/foo)
-└── pm v1.0.0
+└── pm v1.0.0 (proc-macro)
     └── foo v0.1.0 ([..]/foo)
 ",
         )
@@ -1275,7 +1275,7 @@ somedep v1.0.0
 └── foo v0.1.0 ([..]/foo)
 
 somedep v1.0.0
-└── pm v1.0.0
+└── pm v1.0.0 (proc-macro)
     └── foo v0.1.0 ([..]/foo)
 ",
         )