diff --git a/.changeset/seven-queens-try.md b/.changeset/seven-queens-try.md
new file mode 100644
index 00000000000..653659c646b
--- /dev/null
+++ b/.changeset/seven-queens-try.md
@@ -0,0 +1,7 @@
+---
+"@remix-run/cloudflare": major
+"@remix-run/cloudflare-pages": major
+"@remix-run/cloudflare-workers": major
+---
+
+drop `@cloudflare/workers-types` v2 & v3 support
diff --git a/packages/remix-cloudflare-pages/package.json b/packages/remix-cloudflare-pages/package.json
index b838c0edcd4..816f81521cf 100644
--- a/packages/remix-cloudflare-pages/package.json
+++ b/packages/remix-cloudflare-pages/package.json
@@ -18,11 +18,11 @@
     "@remix-run/cloudflare": "1.14.3"
   },
   "devDependencies": {
-    "@cloudflare/workers-types": "^3.4.0",
+    "@cloudflare/workers-types": "^4.20230307.0",
     "@types/mime": "^2.0.3"
   },
   "peerDependencies": {
-    "@cloudflare/workers-types": "^3.0.0"
+    "@cloudflare/workers-types": "^4.0.0"
   },
   "engines": {
     "node": ">=14"
diff --git a/packages/remix-cloudflare-workers/package.json b/packages/remix-cloudflare-workers/package.json
index b57390dea73..df17e1f5d43 100644
--- a/packages/remix-cloudflare-workers/package.json
+++ b/packages/remix-cloudflare-workers/package.json
@@ -19,10 +19,10 @@
     "@remix-run/cloudflare": "1.14.3"
   },
   "devDependencies": {
-    "@cloudflare/workers-types": "^3.4.0"
+    "@cloudflare/workers-types": "^4.20230307.0"
   },
   "peerDependencies": {
-    "@cloudflare/workers-types": "^2.0.0 || ^3.0.0"
+    "@cloudflare/workers-types": "^4.0.0"
   },
   "engines": {
     "node": ">=14"
diff --git a/packages/remix-cloudflare/package.json b/packages/remix-cloudflare/package.json
index bfcc5576897..4e779e48a31 100644
--- a/packages/remix-cloudflare/package.json
+++ b/packages/remix-cloudflare/package.json
@@ -18,10 +18,10 @@
     "@remix-run/server-runtime": "1.14.3"
   },
   "devDependencies": {
-    "@cloudflare/workers-types": "^3.4.0"
+    "@cloudflare/workers-types": "^4.20230307.0"
   },
   "peerDependencies": {
-    "@cloudflare/workers-types": "^2.0.0 || ^3.0.0"
+    "@cloudflare/workers-types": "^4.0.0"
   },
   "engines": {
     "node": ">=14"
diff --git a/templates/cloudflare-pages/package.json b/templates/cloudflare-pages/package.json
index 1c531d567d1..6deaebe9d5c 100644
--- a/templates/cloudflare-pages/package.json
+++ b/templates/cloudflare-pages/package.json
@@ -20,7 +20,7 @@
     "react-dom": "^18.2.0"
   },
   "devDependencies": {
-    "@cloudflare/workers-types": "^3.18.0",
+    "@cloudflare/workers-types": "^4.20230307.0",
     "@remix-run/dev": "*",
     "@remix-run/eslint-config": "*",
     "@types/react": "^18.0.25",
diff --git a/templates/cloudflare-workers/package.json b/templates/cloudflare-workers/package.json
index 23d3ce87fd4..a0b96bbd54a 100644
--- a/templates/cloudflare-workers/package.json
+++ b/templates/cloudflare-workers/package.json
@@ -20,7 +20,7 @@
     "react-dom": "^18.2.0"
   },
   "devDependencies": {
-    "@cloudflare/workers-types": "^3.18.0",
+    "@cloudflare/workers-types": "^4.20230307.0",
     "@remix-run/dev": "*",
     "@remix-run/eslint-config": "*",
     "@types/react": "^18.0.25",
diff --git a/yarn.lock b/yarn.lock
index e8dd4fdd0bd..08fcf6909dd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1570,10 +1570,10 @@
   dependencies:
     mime "^2.5.2"
 
-"@cloudflare/workers-types@^3.4.0":
-  version "3.4.0"
-  resolved "https://registry.npmjs.org/@cloudflare/workers-types/-/workers-types-3.4.0.tgz"
-  integrity sha512-i/3czUrt6YqbOWl44OtIqd0cSZvEVXp/1oD/DZylC4PHZL3q/BhbamdEVeVhc/HPk4iD/7MZ2HGaIMO4Z4b12A==
+"@cloudflare/workers-types@^4.20230307.0":
+  version "4.20230307.0"
+  resolved "https://registry.npmjs.org/@cloudflare/workers-types/-/workers-types-4.20230307.0.tgz#58a20fe167a5c48e20edba8e1fbfe4231bcfa223"
+  integrity sha512-Go968aDDcqONHQcUdgIiPRkPdT4QTzD0ecHJsI1u7ZiHPMOoZn+Dy7hYsdUJ5ldX9wTZDrICBM1rDKTRaDUitg==
 
 "@colors/colors@1.5.0":
   version "1.5.0"