diff --git a/.changeset/heavy-dolls-agree.md b/.changeset/heavy-dolls-agree.md
new file mode 100644
index 000000000000..0748ce4fadea
--- /dev/null
+++ b/.changeset/heavy-dolls-agree.md
@@ -0,0 +1,5 @@
+---
+"miniflare": patch
+---
+
+chore: bump `workerd` to [`1.20240129.0`](https://github.com/cloudflare/workerd/releases/tag/v1.20240129.0)
diff --git a/packages/miniflare/package.json b/packages/miniflare/package.json
index 6f2b0d7452d8..971f45cbc068 100644
--- a/packages/miniflare/package.json
+++ b/packages/miniflare/package.json
@@ -49,7 +49,7 @@
 		"glob-to-regexp": "^0.4.1",
 		"stoppable": "^1.1.0",
 		"undici": "^5.28.2",
-		"workerd": "1.20231218.0",
+		"workerd": "1.20240129.0",
 		"ws": "^8.11.0",
 		"youch": "^3.2.2",
 		"zod": "^3.20.6"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 45c470089867..8717ae3c0fae 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -879,8 +879,8 @@ importers:
         specifier: ^5.28.2
         version: 5.28.2
       workerd:
-        specifier: 1.20231218.0
-        version: 1.20231218.0
+        specifier: 1.20240129.0
+        version: 1.20240129.0
       ws:
         specifier: ^8.11.0
         version: 8.14.2
@@ -3941,8 +3941,8 @@ packages:
       marked: 0.3.19
     dev: false
 
-  /@cloudflare/workerd-darwin-64@1.20231218.0:
-    resolution: {integrity: sha512-547gOmTIVmRdDy7HNAGJUPELa+fSDm2Y0OCxqAtQOz0GLTDu1vX61xYmsb2rn91+v3xW6eMttEIpbYokKjtfJA==}
+  /@cloudflare/workerd-darwin-64@1.20240129.0:
+    resolution: {integrity: sha512-DfVVB5IsQLVcWPJwV019vY3nEtU88c2Qu2ST5SQxqcGivZ52imagLRK0RHCIP8PK4piSiq90qUC6ybppUsw8eg==}
     engines: {node: '>=16'}
     cpu: [x64]
     os: [darwin]
@@ -3950,8 +3950,8 @@ packages:
     dev: false
     optional: true
 
-  /@cloudflare/workerd-darwin-arm64@1.20231218.0:
-    resolution: {integrity: sha512-b39qrU1bKolCfmKFDAnX4vXcqzISkEUVE/V8sMBsFzxrIpNAbcUHBZAQPYmS/OHIGB94KjOVokvDi7J6UNurPw==}
+  /@cloudflare/workerd-darwin-arm64@1.20240129.0:
+    resolution: {integrity: sha512-t0q8ABkmumG1zRM/MZ/vIv/Ysx0vTAXnQAPy/JW5aeQi/tqrypXkO9/NhPc0jbF/g/hIPrWEqpDgEp3CB7Da7Q==}
     engines: {node: '>=16'}
     cpu: [arm64]
     os: [darwin]
@@ -3959,8 +3959,8 @@ packages:
     dev: false
     optional: true
 
-  /@cloudflare/workerd-linux-64@1.20231218.0:
-    resolution: {integrity: sha512-dMUF1wA+0mybm6hHNOCgY/WMNMwomPPs4I7vvYCgwHSkch0Q2Wb7TnxQZSt8d1PK/myibaBwadrlIxpjxmpz3w==}
+  /@cloudflare/workerd-linux-64@1.20240129.0:
+    resolution: {integrity: sha512-sFV1uobHgDI+6CKBS/ZshQvOvajgwl6BtiYaH4PSFSpvXTmRx+A9bcug+6BnD+V4WgwxTiEO2iR97E1XuwDAVw==}
     engines: {node: '>=16'}
     cpu: [x64]
     os: [linux]
@@ -3968,8 +3968,8 @@ packages:
     dev: false
     optional: true
 
-  /@cloudflare/workerd-linux-arm64@1.20231218.0:
-    resolution: {integrity: sha512-2s5uc8IHt0QmWyKxAr1Fy+4b8Xy0b/oUtlPnm5MrKi2gDRlZzR7JvxENPJCpCnYENydS8lzvkMiAFECPBccmyQ==}
+  /@cloudflare/workerd-linux-arm64@1.20240129.0:
+    resolution: {integrity: sha512-O7q7htHaFRp8PgTqNJx1/fYc3+LnvAo6kWWB9a14C5OWak6AAZk42PNpKPx+DXTmGvI+8S1+futBGUeJ8NPDXg==}
     engines: {node: '>=16'}
     cpu: [arm64]
     os: [linux]
@@ -3977,8 +3977,8 @@ packages:
     dev: false
     optional: true
 
-  /@cloudflare/workerd-windows-64@1.20231218.0:
-    resolution: {integrity: sha512-oN5hz6TXUDB5YKUN5N3QWAv6cYz9JjTZ9g16HVyoegVFEL6/zXU3tV19MBX2IvlE11ab/mRogEv9KXVIrHfKmA==}
+  /@cloudflare/workerd-windows-64@1.20240129.0:
+    resolution: {integrity: sha512-YqGno0XSqqqkDmNoGEX6M8kJlI2lEfWntbTPVtHaZlaXVR9sWfoD7TEno0NKC95cXFz+ioyFLbgbOdnfWwmVAA==}
     engines: {node: '>=16'}
     cpu: [x64]
     os: [win32]
@@ -19561,17 +19561,17 @@ packages:
     resolution: {integrity: sha512-gvVzJFlPycKc5dZN4yPkP8w7Dc37BtP1yczEneOb4uq34pXZcvrtRTmWV8W+Ume+XCxKgbjM+nevkyFPMybd4Q==}
     dev: true
 
-  /workerd@1.20231218.0:
-    resolution: {integrity: sha512-AGIsDvqCrcwhoA9kb1hxOhVAe53/xJeaGZxL4FbYI9FvO17DZwrnqGq+6eqItJ6Cfw1ZLmf3BM+QdMWaL2bFWQ==}
+  /workerd@1.20240129.0:
+    resolution: {integrity: sha512-t4pnsmjjk/u+GdVDgH2M1AFmJaBUABshYK/vT/HNrAXsHSwN6VR8Yqw0JQ845OokO34VLkuUtYQYyxHHKpdtsw==}
     engines: {node: '>=16'}
     hasBin: true
     requiresBuild: true
     optionalDependencies:
-      '@cloudflare/workerd-darwin-64': 1.20231218.0
-      '@cloudflare/workerd-darwin-arm64': 1.20231218.0
-      '@cloudflare/workerd-linux-64': 1.20231218.0
-      '@cloudflare/workerd-linux-arm64': 1.20231218.0
-      '@cloudflare/workerd-windows-64': 1.20231218.0
+      '@cloudflare/workerd-darwin-64': 1.20240129.0
+      '@cloudflare/workerd-darwin-arm64': 1.20240129.0
+      '@cloudflare/workerd-linux-64': 1.20240129.0
+      '@cloudflare/workerd-linux-arm64': 1.20240129.0
+      '@cloudflare/workerd-windows-64': 1.20240129.0
     dev: false
 
   /wrap-ansi@6.2.0: