diff --git a/packages/core/package.json b/packages/core/package.json
index a1feef2..00b5351 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -26,7 +26,7 @@
   "types": "lib/index.d.ts",
   "author": "Tony Garnock-Jones <tonyg@leastfixedpoint.com>",
   "dependencies": {
-    "@preserves/core": ">=0.20",
-    "@preserves/schema": ">=0.21"
+    "@preserves/core": ">=0.20.2",
+    "@preserves/schema": ">=0.21.2"
   }
 }
diff --git a/packages/ws-relay/package.json b/packages/ws-relay/package.json
index 05e3385..2d667e1 100644
--- a/packages/ws-relay/package.json
+++ b/packages/ws-relay/package.json
@@ -24,8 +24,8 @@
   "types": "lib/index.d.ts",
   "author": "Tony Garnock-Jones <tonyg@leastfixedpoint.com>",
   "dependencies": {
-    "@preserves/core": ">=0.20",
-    "@preserves/schema": ">=0.21",
+    "@preserves/core": ">=0.20.2",
+    "@preserves/schema": ">=0.21.2",
     "@syndicate-lang/core": "^0.11.3"
   },
   "devDependencies": {