diff --git a/.changeset/eight-lights-taste.md b/.changeset/eight-lights-taste.md
new file mode 100644
index 0000000..5a0d39d
--- /dev/null
+++ b/.changeset/eight-lights-taste.md
@@ -0,0 +1,5 @@
+---
+"create-better-t-stack": patch
+---
+
+Change PrismaClient instantiation from `let` to `const`
diff --git a/apps/cli/template/with-prisma-mongodb/apps/server/prisma/index.ts b/apps/cli/template/with-prisma-mongodb/apps/server/prisma/index.ts
index 34ab1b5..b5bf6ce 100644
--- a/apps/cli/template/with-prisma-mongodb/apps/server/prisma/index.ts
+++ b/apps/cli/template/with-prisma-mongodb/apps/server/prisma/index.ts
@@ -1,5 +1,5 @@
 import { PrismaClient } from "@prisma/client";
 
-let prisma = new PrismaClient();
+const prisma = new PrismaClient();
 
 export default prisma;
diff --git a/apps/cli/template/with-prisma-mysql/apps/server/prisma/index.ts b/apps/cli/template/with-prisma-mysql/apps/server/prisma/index.ts
index 34ab1b5..b5bf6ce 100644
--- a/apps/cli/template/with-prisma-mysql/apps/server/prisma/index.ts
+++ b/apps/cli/template/with-prisma-mysql/apps/server/prisma/index.ts
@@ -1,5 +1,5 @@
 import { PrismaClient } from "@prisma/client";
 
-let prisma = new PrismaClient();
+const prisma = new PrismaClient();
 
 export default prisma;
diff --git a/apps/cli/template/with-prisma-postgres/apps/server/prisma/index.ts b/apps/cli/template/with-prisma-postgres/apps/server/prisma/index.ts
index 34ab1b5..b5bf6ce 100644
--- a/apps/cli/template/with-prisma-postgres/apps/server/prisma/index.ts
+++ b/apps/cli/template/with-prisma-postgres/apps/server/prisma/index.ts
@@ -1,5 +1,5 @@
 import { PrismaClient } from "@prisma/client";
 
-let prisma = new PrismaClient();
+const prisma = new PrismaClient();
 
 export default prisma;
diff --git a/apps/cli/template/with-prisma-sqlite/apps/server/prisma/index.ts b/apps/cli/template/with-prisma-sqlite/apps/server/prisma/index.ts
index 34ab1b5..b5bf6ce 100644
--- a/apps/cli/template/with-prisma-sqlite/apps/server/prisma/index.ts
+++ b/apps/cli/template/with-prisma-sqlite/apps/server/prisma/index.ts
@@ -1,5 +1,5 @@
 import { PrismaClient } from "@prisma/client";
 
-let prisma = new PrismaClient();
+const prisma = new PrismaClient();
 
 export default prisma;