diff --git a/db/init.sql b/db/init.sql
index 3eadd13..7e66871 100644
--- a/db/init.sql
+++ b/db/init.sql
@@ -56,7 +56,7 @@ CREATE TABLE IF NOT EXISTS workflow_checkpoints (
     agent_name VARCHAR(128) NOT NULL,
     document_id UUID NOT NULL,
     current_activity VARCHAR(128) NOT NULL,
-    state_data JSONB,
+    state_data TEXT,
     is_completed BOOLEAN NOT NULL DEFAULT FALSE,
     is_failed BOOLEAN NOT NULL DEFAULT FALSE,
     error_message TEXT,
diff --git a/src/Worker/Data/AppDbContext.cs b/src/Worker/Data/AppDbContext.cs
index 577c02a..e82e625 100644
--- a/src/Worker/Data/AppDbContext.cs
+++ b/src/Worker/Data/AppDbContext.cs
@@ -43,7 +43,7 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
             entity.HasKey(e => e.Id);
             entity.Property(e => e.AgentName).HasMaxLength(128).IsRequired();
             entity.Property(e => e.CurrentActivity).HasMaxLength(128).IsRequired();
-            entity.Property(e => e.StateData).HasColumnType("jsonb");
+            entity.Property(e => e.StateData).HasColumnType("text");
             entity.Property(e => e.ErrorMessage).HasMaxLength(4096);
             entity.HasIndex(e => new { e.AgentName, e.DocumentId });
             entity.HasIndex(e => e.IsCompleted);