diff --git a/server.go b/server.go
index 46272b1..dd39e02 100644
--- a/server.go
+++ b/server.go
@@ -21,10 +21,10 @@ type SnapshotRecord struct {
 }
 
 type SnapshotSubmission struct {
-	Timestamp string `json:"time"`
-	Temp string `json:"temp"`
-	Humidity string `json:"humidity"`
-	Co2 string `json:"co2"`
+	Timestamp time.Time `json:"time"`
+	Temp float32 `json:"temp"`
+	Humidity float32 `json:"humidity"`
+	Co2 float32 `json:"co2"`
 }