diff --git a/apps/server/src/ee b/apps/server/src/ee
index 9b999c687..5d371309c 160000
--- a/apps/server/src/ee
+++ b/apps/server/src/ee
@@ -1 +1 @@
-Subproject commit 9b999c687f9742b5ea579c89ccadc17087bb24a1
+Subproject commit 5d371309ca9a23b9e98c93b449b7fb6af0c13a11
diff --git a/apps/server/src/integrations/environment/environment.validation.ts b/apps/server/src/integrations/environment/environment.validation.ts
index e584e8125..d431d7e3a 100644
--- a/apps/server/src/integrations/environment/environment.validation.ts
+++ b/apps/server/src/integrations/environment/environment.validation.ts
@@ -5,6 +5,7 @@ import {
   IsOptional,
   IsString,
   IsUrl,
+  Matches,
   MinLength,
   ValidateIf,
   validateSync,
@@ -137,6 +138,10 @@ export class EnvironmentVariables {
 
   @IsOptional()
   @IsString()
+  @Matches(/^[A-Za-z0-9\-_.]{1,90}$/, {
+    message:
+      'TURBOPUFFER_NAMESPACE_PREFIX may only contain letters, digits, dot, dash, underscore (max 90 chars)',
+  })
   TURBOPUFFER_NAMESPACE_PREFIX: string;
 
   @IsOptional()