diff --git a/packages/core/package.json b/packages/core/package.json
index 1822f7e..a0847cb 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -30,7 +30,7 @@
   "author": "Tony Garnock-Jones <tonyg@leastfixedpoint.com>",
   "dependencies": {
     "@preserves/core": ">=0.20.2",
-    "@preserves/schema": ">=0.21.2",
+    "@preserves/schema": ">=0.21.9",
     "salty-crypto": "0.3.1"
   }
 }
diff --git a/packages/create/template/package.json b/packages/create/template/package.json
index 7246c55..29e6222 100644
--- a/packages/create/template/package.json
+++ b/packages/create/template/package.json
@@ -4,7 +4,7 @@
   "license": "GPL-3.0+",
   "devDependencies": {
     "@preserves/core": ">=0.20",
-    "@preserves/schema": ">=0.21",
+    "@preserves/schema": ">=0.21.9",
     "@syndicate-lang/ts-plugin": "*",
     "@syndicate-lang/tsc": "*",
     "rollup": "^2.60",
diff --git a/packages/fs/package.json b/packages/fs/package.json
index 354e839..a32a360 100644
--- a/packages/fs/package.json
+++ b/packages/fs/package.json
@@ -28,7 +28,7 @@
   },
   "dependencies": {
     "@preserves/core": ">=0.20.2",
-    "@preserves/schema": ">=0.21.2",
+    "@preserves/schema": ">=0.21.9",
     "@syndicate-lang/core": "^0.14.0",
     "@syndicate-lang/service": "^0.14.0",
     "chokidar": "^3.5.3"
diff --git a/yarn.lock b/yarn.lock
index f3e4113..9edc739 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1412,17 +1412,22 @@
   dependencies:
     "@octokit/openapi-types" "^12.11.0"
 
-"@preserves/core@>=0.20.2", "@preserves/core@^0.20.5":
+"@preserves/core@>=0.20.2":
   version "0.20.5"
   resolved "https://registry.yarnpkg.com/@preserves/core/-/core-0.20.5.tgz#3b34693b1f5aff659639690725a703a95689f822"
   integrity sha512-hnywtmY30swKSuHix3MbEoheyCh6plCERzmhnCQllrkhdT0hFm66iSr2PVjNsXAUNIwd3Rh3Vu2btgdjMK+Q9Q==
 
-"@preserves/schema@>=0.21.2":
-  version "0.21.7"
-  resolved "https://registry.yarnpkg.com/@preserves/schema/-/schema-0.21.7.tgz#09e388b8c582c3dc95018ebdfe990381dddabfa8"
-  integrity sha512-q2gncEOOY3qqs+i+Op5yZx89cckqN601vbEcBDfnQge5PB9HrOrfMk68Wq4w/rpdQpRyVqWhZNxLlKsANjgoOw==
+"@preserves/core@^0.20.6":
+  version "0.20.6"
+  resolved "https://registry.yarnpkg.com/@preserves/core/-/core-0.20.6.tgz#700feffdb25e21b2c817ab8816aefc6620534881"
+  integrity sha512-SC7NTpkw4Aajs57A7rgRtL8xLAktFFDDQ0OvAKtdc59oDNw606uu2OD6gVTm+R6oLqOCRDre47ndJNEaEHESIA==
+
+"@preserves/schema@>=0.21.9":
+  version "0.21.9"
+  resolved "https://registry.yarnpkg.com/@preserves/schema/-/schema-0.21.9.tgz#a96f75192841cf302fb74b1e936e1d57d2b09130"
+  integrity sha512-dD7gw7gS68zVlm/JiEb45SxM4tsFtkQTAbQKqLelK81X4wMJ3TeUv1qL0dUzyA7ho9wqznpZoOTK0EEnxB5gIA==
   dependencies:
-    "@preserves/core" "^0.20.5"
+    "@preserves/core" "^0.20.6"
     "@types/glob" "^7.1"
     "@types/minimatch" "^3.0"
     chalk "^4.1"