diff --git a/ports/tcl/vcpkg.json b/ports/tcl/vcpkg.json
index 9d9b85d69b..754fca76eb 100644
--- a/ports/tcl/vcpkg.json
+++ b/ports/tcl/vcpkg.json
@@ -1,10 +1,13 @@
 {
   "name": "tcl",
   "version-string": "core-9-0-a1",
-  "port-version": 6,
+  "port-version": 7,
   "description": "Tcl provides a powerful platform for creating integration applications that tie together diverse applications, protocols, devices, and frameworks. When paired with the Tk toolkit, Tcl provides the fastest and most powerful way to create GUI applications that run on PCs, Unix, and Mac OS X. Tcl can also be used for a variety of web-related tasks and for creating powerful command languages for applications.",
   "homepage": "https://github.com/tcltk/tcl",
   "supports": "!android & !(windows & arm) & !uwp",
+  "dependencies": [
+    "zlib"
+  ],
   "features": {
     "profile": {
       "description": "Adds profiling hooks.  Map file is assumed."
diff --git a/versions/baseline.json b/versions/baseline.json
index 67a4e94286..d0fcf9e464 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -8598,7 +8598,7 @@
     },
     "tcl": {
       "baseline": "core-9-0-a1",
-      "port-version": 6
+      "port-version": 7
     },
     "tclap": {
       "baseline": "1.2.5",
diff --git a/versions/t-/tcl.json b/versions/t-/tcl.json
index 0f424272fa..c83688c33d 100644
--- a/versions/t-/tcl.json
+++ b/versions/t-/tcl.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "cf292d0782ec4b951e94467bd26a6b4a1db5874f",
+      "version-string": "core-9-0-a1",
+      "port-version": 7
+    },
     {
       "git-tree": "e825eeb13189650d5919608370935891a5cba218",
       "version-string": "core-9-0-a1",