diff --git a/.changeset/neat-houses-explode.md b/.changeset/neat-houses-explode.md
deleted file mode 100644
index 63cd90d233..0000000000
--- a/.changeset/neat-houses-explode.md
+++ /dev/null
@@ -1,16 +0,0 @@
----
-'graphql-language-service-server': minor
-'@graphiql/plugin-code-exporter': minor
-'graphql-language-service-cli': minor
-'@graphiql/plugin-explorer': minor
-'graphql-language-service': minor
-'codemirror-graphql': minor
-'@graphiql/toolkit': minor
-'@graphiql/react': minor
-'monaco-graphql': minor
-'cm6-graphql': minor
-'graphiql': minor
----
-
-officially deprecate graphql@15 support, as our types and other runtime capabilities ceased to be compatible in 2022 or 2023, but the regression tests were disabled
-`graphql-language-service` is where the bug is, which is used by all of the libraries and applications in `graphiql` monorepo.
diff --git a/.changeset/strange-knives-hammer.md b/.changeset/strange-knives-hammer.md
index 08369aaab3..106640053c 100644
--- a/.changeset/strange-knives-hammer.md
+++ b/.changeset/strange-knives-hammer.md
@@ -15,4 +15,4 @@
 'vscode-graphql-syntax': patch
 ---
 
-use latest stable version of graphql 16.9.0
+use latest stable version of graphql 16.9.0 for tests
diff --git a/packages/cm6-graphql/package.json b/packages/cm6-graphql/package.json
index 1bdadb27d1..fb1aa9b349 100644
--- a/packages/cm6-graphql/package.json
+++ b/packages/cm6-graphql/package.json
@@ -44,7 +44,7 @@
     "@codemirror/state": "^6.0.0",
     "@codemirror/view": "^6.0.0",
     "@lezer/highlight": "^1.0.0",
-    "graphql": "^16.5.0"
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0"
   },
   "license": "MIT"
 }
diff --git a/packages/codemirror-graphql/package.json b/packages/codemirror-graphql/package.json
index b45d94408e..efd088dbbd 100644
--- a/packages/codemirror-graphql/package.json
+++ b/packages/codemirror-graphql/package.json
@@ -40,7 +40,7 @@
   "peerDependencies": {
     "@codemirror/language": "6.0.0",
     "codemirror": "^5.65.3",
-    "graphql": "^16.0.0"
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0"
   },
   "// TEMPORARILY PINNED until we fix graphql 15 support": "",
   "dependencies": {
diff --git a/packages/graphiql-plugin-code-exporter/package.json b/packages/graphiql-plugin-code-exporter/package.json
index a750ddd171..5636068b19 100644
--- a/packages/graphiql-plugin-code-exporter/package.json
+++ b/packages/graphiql-plugin-code-exporter/package.json
@@ -34,7 +34,7 @@
   },
   "peerDependencies": {
     "@graphiql/react": "^0.26.0",
-    "graphql": "^16.0.0",
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0",
     "react": "^16.8.0 || ^17 || ^18",
     "react-dom": "^16.8.0 || ^17 || ^18"
   },
diff --git a/packages/graphiql-plugin-explorer/package.json b/packages/graphiql-plugin-explorer/package.json
index 5cee6c4bf9..2016e31247 100644
--- a/packages/graphiql-plugin-explorer/package.json
+++ b/packages/graphiql-plugin-explorer/package.json
@@ -33,7 +33,7 @@
   },
   "peerDependencies": {
     "@graphiql/react": "^0.26.0",
-    "graphql": "^16.0.0",
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0",
     "react": "^16.8.0 || ^17 || ^18",
     "react-dom": "^16.8.0 || ^17 || ^18"
   },
diff --git a/packages/graphiql-react/package.json b/packages/graphiql-react/package.json
index 76c4e4b2b9..9fa1548abb 100644
--- a/packages/graphiql-react/package.json
+++ b/packages/graphiql-react/package.json
@@ -43,7 +43,7 @@
     "build": "tsc --emitDeclarationOnly && vite build"
   },
   "peerDependencies": {
-    "graphql": "^16.0.0",
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0",
     "react": "^16.8.0 || ^17 || ^18",
     "react-dom": "^16.8.0 || ^17 || ^18"
   },
diff --git a/packages/graphiql-toolkit/package.json b/packages/graphiql-toolkit/package.json
index aee9a44b3b..881f1205b5 100644
--- a/packages/graphiql-toolkit/package.json
+++ b/packages/graphiql-toolkit/package.json
@@ -37,7 +37,7 @@
     "tsup": "^8.2.4"
   },
   "peerDependencies": {
-    "graphql": "^16.0.0",
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0",
     "graphql-ws": ">= 4.5.0"
   },
   "peerDependenciesMeta": {
diff --git a/packages/graphiql/package.json b/packages/graphiql/package.json
index ca669ef1da..4c99237926 100644
--- a/packages/graphiql/package.json
+++ b/packages/graphiql/package.json
@@ -50,7 +50,7 @@
     "@graphiql/react": "^0.26.2"
   },
   "peerDependencies": {
-    "graphql": "^16.0.0",
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0",
     "react": "^16.8.0 || ^17 || ^18",
     "react-dom": "^16.8.0 || ^17 || ^18"
   },
diff --git a/packages/graphql-language-service-cli/package.json b/packages/graphql-language-service-cli/package.json
index d6e80afb36..b7010004ff 100644
--- a/packages/graphql-language-service-cli/package.json
+++ b/packages/graphql-language-service-cli/package.json
@@ -32,7 +32,7 @@
     "LSP"
   ],
   "peerDependencies": {
-    "graphql": "^16.0.0"
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0"
   },
   "dependencies": {
     "@babel/polyfill": "^7.12.1",
diff --git a/packages/graphql-language-service/package.json b/packages/graphql-language-service/package.json
index d2ae7fcacd..030119aba5 100644
--- a/packages/graphql-language-service/package.json
+++ b/packages/graphql-language-service/package.json
@@ -32,7 +32,7 @@
     "graphql": "./dist/temp-bin.js"
   },
   "peerDependencies": {
-    "graphql": "^16.0.0"
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0"
   },
   "dependencies": {
     "debounce-promise": "^3.1.2",
diff --git a/packages/monaco-graphql/package.json b/packages/monaco-graphql/package.json
index 5fe092c6a6..164da6aab1 100644
--- a/packages/monaco-graphql/package.json
+++ b/packages/monaco-graphql/package.json
@@ -77,7 +77,7 @@
     "vscode-languageserver-types": "^3.17.1"
   },
   "peerDependencies": {
-    "graphql": "^16.0.0",
+    "graphql": "^15.5.0 || ^16.0.0 || ^17.0.0",
     "monaco-editor": ">= 0.20.0 < 1",
     "prettier": "^2.8.0 || ^3.0.0"
   }