diff --git a/lib/arborist/build-ideal-tree.js b/lib/arborist/build-ideal-tree.js
index 9328b8043..7b4fdd593 100644
--- a/lib/arborist/build-ideal-tree.js
+++ b/lib/arborist/build-ideal-tree.js
@@ -416,7 +416,7 @@ module.exports = cls => class IdealTreeBuilder extends cls {
       await this[_add](options)
 
     // triggers a refresh of all edgesOut
-    if (options.add && options.add.length || options.rm && options.rm.length)
+    if (options.add && options.add.length || options.rm && options.rm.length || this[_global])
       tree.package = tree.package
     process.emit('timeEnd', 'idealTree:userRequests')
   }
diff --git a/lib/arborist/reify.js b/lib/arborist/reify.js
index 19c7fa384..34c1dbb18 100644
--- a/lib/arborist/reify.js
+++ b/lib/arborist/reify.js
@@ -233,7 +233,7 @@ module.exports = cls => class Reifier extends cls {
     const actualOpt = this[_global] ? {
       ignoreMissing: true,
       global: true,
-      filter: (node, kid) => !node.isRoot && node !== node.root.target
+      filter: (node, kid) => this[_explicitRequests].size === 0 || !node.isProjectRoot
         ? true
         : (node.edgesOut.has(kid) || this[_explicitRequests].has(kid)),
     } : { ignoreMissing: true }
diff --git a/tap-snapshots/test-arborist-build-ideal-tree.js-TAP.test.js b/tap-snapshots/test-arborist-build-ideal-tree.js-TAP.test.js
index d419032bc..b83ccc8dc 100644
--- a/tap-snapshots/test-arborist-build-ideal-tree.js-TAP.test.js
+++ b/tap-snapshots/test-arborist-build-ideal-tree.js-TAP.test.js
@@ -128524,6 +128524,56 @@ ArboristNode {
 
 exports[`test/arborist/build-ideal-tree.js TAP update global > update a single dep 1`] = `
 ArboristNode {
+  "children": Map {
+    "once" => ArboristNode {
+      "children": Map {
+        "wrappy" => ArboristNode {
+          "edgesIn": Set {
+            EdgeIn {
+              "from": "node_modules/once",
+              "name": "wrappy",
+              "spec": "1",
+              "type": "prod",
+            },
+          },
+          "location": "node_modules/once/node_modules/wrappy",
+          "name": "wrappy",
+          "path": "{CWD}/test/arborist/build-ideal-tree-update-global/node_modules/once/node_modules/wrappy",
+          "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+          "version": "1.0.2",
+        },
+      },
+      "edgesIn": Set {
+        EdgeIn {
+          "from": "",
+          "name": "once",
+          "spec": "*",
+          "type": "prod",
+        },
+      },
+      "edgesOut": Map {
+        "wrappy" => EdgeOut {
+          "name": "wrappy",
+          "spec": "1",
+          "to": "node_modules/once/node_modules/wrappy",
+          "type": "prod",
+        },
+      },
+      "location": "node_modules/once",
+      "name": "once",
+      "path": "{CWD}/test/arborist/build-ideal-tree-update-global/node_modules/once",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "version": "1.4.0",
+    },
+  },
+  "edgesOut": Map {
+    "once" => EdgeOut {
+      "name": "once",
+      "spec": "*",
+      "to": "node_modules/once",
+      "type": "prod",
+    },
+  },
   "location": "",
   "name": "build-ideal-tree-update-global",
   "path": "{CWD}/test/arborist/build-ideal-tree-update-global",
@@ -128532,6 +128582,125 @@ ArboristNode {
 
 exports[`test/arborist/build-ideal-tree.js TAP update global > update all the deps 1`] = `
 ArboristNode {
+  "children": Map {
+    "@isaacs/testing-dev-optional-flags" => ArboristNode {
+      "children": Map {
+        "own-or" => ArboristNode {
+          "edgesIn": Set {
+            EdgeIn {
+              "from": "node_modules/@isaacs/testing-dev-optional-flags",
+              "name": "own-or",
+              "spec": "^1.0.0",
+              "type": "optional",
+            },
+          },
+          "location": "node_modules/@isaacs/testing-dev-optional-flags/node_modules/own-or",
+          "name": "own-or",
+          "optional": true,
+          "path": "{CWD}/test/arborist/build-ideal-tree-update-global/node_modules/@isaacs/testing-dev-optional-flags/node_modules/own-or",
+          "resolved": "https://registry.npmjs.org/own-or/-/own-or-1.0.0.tgz",
+          "version": "1.0.0",
+        },
+        "wrappy" => ArboristNode {
+          "edgesIn": Set {
+            EdgeIn {
+              "from": "node_modules/@isaacs/testing-dev-optional-flags",
+              "name": "wrappy",
+              "spec": "^1.0.2",
+              "type": "optional",
+            },
+          },
+          "location": "node_modules/@isaacs/testing-dev-optional-flags/node_modules/wrappy",
+          "name": "wrappy",
+          "optional": true,
+          "path": "{CWD}/test/arborist/build-ideal-tree-update-global/node_modules/@isaacs/testing-dev-optional-flags/node_modules/wrappy",
+          "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+          "version": "1.0.2",
+        },
+      },
+      "edgesIn": Set {
+        EdgeIn {
+          "from": "",
+          "name": "@isaacs/testing-dev-optional-flags",
+          "spec": "*",
+          "type": "prod",
+        },
+      },
+      "edgesOut": Map {
+        "own-or" => EdgeOut {
+          "name": "own-or",
+          "spec": "^1.0.0",
+          "to": "node_modules/@isaacs/testing-dev-optional-flags/node_modules/own-or",
+          "type": "optional",
+        },
+        "wrappy" => EdgeOut {
+          "name": "wrappy",
+          "spec": "^1.0.2",
+          "to": "node_modules/@isaacs/testing-dev-optional-flags/node_modules/wrappy",
+          "type": "optional",
+        },
+      },
+      "location": "node_modules/@isaacs/testing-dev-optional-flags",
+      "name": "@isaacs/testing-dev-optional-flags",
+      "path": "{CWD}/test/arborist/build-ideal-tree-update-global/node_modules/@isaacs/testing-dev-optional-flags",
+      "resolved": "https://registry.npmjs.org/@isaacs/testing-dev-optional-flags/-/testing-dev-optional-flags-1.0.0.tgz",
+      "version": "1.0.0",
+    },
+    "once" => ArboristNode {
+      "children": Map {
+        "wrappy" => ArboristNode {
+          "edgesIn": Set {
+            EdgeIn {
+              "from": "node_modules/once",
+              "name": "wrappy",
+              "spec": "1",
+              "type": "prod",
+            },
+          },
+          "location": "node_modules/once/node_modules/wrappy",
+          "name": "wrappy",
+          "path": "{CWD}/test/arborist/build-ideal-tree-update-global/node_modules/once/node_modules/wrappy",
+          "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+          "version": "1.0.2",
+        },
+      },
+      "edgesIn": Set {
+        EdgeIn {
+          "from": "",
+          "name": "once",
+          "spec": "*",
+          "type": "prod",
+        },
+      },
+      "edgesOut": Map {
+        "wrappy" => EdgeOut {
+          "name": "wrappy",
+          "spec": "1",
+          "to": "node_modules/once/node_modules/wrappy",
+          "type": "prod",
+        },
+      },
+      "location": "node_modules/once",
+      "name": "once",
+      "path": "{CWD}/test/arborist/build-ideal-tree-update-global/node_modules/once",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "version": "1.4.0",
+    },
+  },
+  "edgesOut": Map {
+    "@isaacs/testing-dev-optional-flags" => EdgeOut {
+      "name": "@isaacs/testing-dev-optional-flags",
+      "spec": "*",
+      "to": "node_modules/@isaacs/testing-dev-optional-flags",
+      "type": "prod",
+    },
+    "once" => EdgeOut {
+      "name": "once",
+      "spec": "*",
+      "to": "node_modules/once",
+      "type": "prod",
+    },
+  },
   "location": "",
   "name": "build-ideal-tree-update-global",
   "path": "{CWD}/test/arborist/build-ideal-tree-update-global",