diff --git a/files/grest/rpc/governance/drep_info.sql b/files/grest/rpc/governance/drep_info.sql
index d6166a99..fcac9336 100644
--- a/files/grest/rpc/governance/drep_info.sql
+++ b/files/grest/rpc/governance/drep_info.sql
@@ -98,9 +98,9 @@ BEGIN
       ENCODE(dh.raw, 'hex')::text AS hex,
       dh.has_script AS has_script,
       (CASE WHEN starts_with(dh.view,'drep_') OR (COALESCE(dr.deposit, 0) >= 0 AND dr.drep_hash_id IS NOT NULL) THEN TRUE ELSE FALSE END) AS registered,
-      (CASE WHEN (dr.deposit < 0) OR starts_with(dh.view,'drep_') THEN 0 ELSE COALESCE(ds.deposit, 0) END)::text AS deposit,
+      (CASE WHEN (dr.deposit < 0) OR starts_with(dh.view,'drep_') THEN NULL ELSE ds.deposit END)::text AS deposit,
       (CASE WHEN starts_with(dh.view,'drep_') THEN TRUE ELSE COALESCE(dr.deposit, 0) >= 0 AND ds.active END) AS active,
-      (CASE WHEN COALESCE(dr.deposit, 0) >= 0 THEN COALESCE(ds.expires_epoch_no, 0) ELSE 0 END) AS expires_epoch_no,
+      (CASE WHEN COALESCE(dr.deposit, 0) >= 0 THEN ds.expires_epoch_no ELSE NULL END) AS expires_epoch_no,
       COALESCE(dd.amount, 0)::text AS amount
     FROM public.drep_hash AS dh
       LEFT JOIN public.drep_registration AS dr ON dh.id = dr.drep_hash_id
diff --git a/specs/results/koiosapi-guild.yaml b/specs/results/koiosapi-guild.yaml
index 648fbbba..0314102f 100644
--- a/specs/results/koiosapi-guild.yaml
+++ b/specs/results/koiosapi-guild.yaml
@@ -4974,7 +4974,9 @@ components:
             description: Flag to show if the DRep is currently registered
             example: false
           deposit:
-            type: string
+            type:
+              - string
+              - null
             description: DRep's registration deposit  in lovelace
             example: 500000000
           active:
@@ -4982,7 +4984,9 @@ components:
             description: Flag to show if the DRep is  (i.e. not expired)
             example: true
           expires_epoch_no:
-            type: number
+            type:
+              - number
+              - null
             description: After which epoch DRep is considered inactive.
             example: 410
           amount:
diff --git a/specs/results/koiosapi-mainnet.yaml b/specs/results/koiosapi-mainnet.yaml
index 3477c50d..49bf4682 100644
--- a/specs/results/koiosapi-mainnet.yaml
+++ b/specs/results/koiosapi-mainnet.yaml
@@ -4974,7 +4974,9 @@ components:
             description: Flag to show if the DRep is currently registered
             example: false
           deposit:
-            type: string
+            type:
+              - string
+              - null
             description: DRep's registration deposit  in lovelace
             example: 500000000
           active:
@@ -4982,7 +4984,9 @@ components:
             description: Flag to show if the DRep is  (i.e. not expired)
             example: true
           expires_epoch_no:
-            type: number
+            type:
+              - number
+              - null
             description: After which epoch DRep is considered inactive.
             example: 410
           amount:
diff --git a/specs/results/koiosapi-preprod.yaml b/specs/results/koiosapi-preprod.yaml
index 821f1e11..f37492fa 100644
--- a/specs/results/koiosapi-preprod.yaml
+++ b/specs/results/koiosapi-preprod.yaml
@@ -4974,7 +4974,9 @@ components:
             description: Flag to show if the DRep is currently registered
             example: false
           deposit:
-            type: string
+            type:
+              - string
+              - null
             description: DRep's registration deposit  in lovelace
             example: 500000000
           active:
@@ -4982,7 +4984,9 @@ components:
             description: Flag to show if the DRep is  (i.e. not expired)
             example: true
           expires_epoch_no:
-            type: number
+            type:
+              - number
+              - null
             description: After which epoch DRep is considered inactive.
             example: 410
           amount:
diff --git a/specs/results/koiosapi-preview.yaml b/specs/results/koiosapi-preview.yaml
index 9f9b6f2c..0ff2e7f8 100644
--- a/specs/results/koiosapi-preview.yaml
+++ b/specs/results/koiosapi-preview.yaml
@@ -4974,7 +4974,9 @@ components:
             description: Flag to show if the DRep is currently registered
             example: false
           deposit:
-            type: string
+            type:
+              - string
+              - null
             description: DRep's registration deposit  in lovelace
             example: 500000000
           active:
@@ -4982,7 +4984,9 @@ components:
             description: Flag to show if the DRep is  (i.e. not expired)
             example: true
           expires_epoch_no:
-            type: number
+            type:
+              - number
+              - null
             description: After which epoch DRep is considered inactive.
             example: 410
           amount:
diff --git a/specs/templates/4-api-schemas.yaml b/specs/templates/4-api-schemas.yaml
index e3ea9235..97da16fa 100644
--- a/specs/templates/4-api-schemas.yaml
+++ b/specs/templates/4-api-schemas.yaml
@@ -2273,7 +2273,9 @@ schemas:
             description: Flag to show if the DRep is currently registered
             example: false
           deposit:
-            type: string
+            type:
+              - string
+              - null
             description: DRep's registration deposit  in lovelace
             example: 500000000
           active:
@@ -2281,7 +2283,9 @@ schemas:
             description: Flag to show if the DRep is  (i.e. not expired)
             example: true
           expires_epoch_no:
-            type: number
+            type:
+              - number
+              - null
             description: After which epoch DRep is considered inactive.
             example: 410
           amount: