diff --git a/src/server/api/schema/shares.ts b/src/server/api/schema/shares.ts
index a8401eef6..bbc2626bb 100644
--- a/src/server/api/schema/shares.ts
+++ b/src/server/api/schema/shares.ts
@@ -126,9 +126,11 @@ export const CreateShareSchema = ShareSchema.omit({
   createdAt: true,
   updatedAt: true,
   companyId: true,
-}).openapi({
-  description: "Issue shares to a stakeholder in a company.",
-});
+})
+  .strict()
+  .openapi({
+    description: "Issue shares to a stakeholder in a company.",
+  });
 
 export const UpdateShareSchema = ShareSchema.omit({
   id: true,
@@ -136,6 +138,7 @@ export const UpdateShareSchema = ShareSchema.omit({
   updatedAt: true,
 })
   .partial()
+  .strict()
   .refine(
     (data) => {
       return Object.values(data).some((value) => value !== undefined);
diff --git a/src/server/api/schema/stakeholder.ts b/src/server/api/schema/stakeholder.ts
index 854ff7470..b520158b7 100644
--- a/src/server/api/schema/stakeholder.ts
+++ b/src/server/api/schema/stakeholder.ts
@@ -86,7 +86,11 @@ export const CreateStakeholderSchema = z.array(
     id: true,
     createdAt: true,
     updatedAt: true,
-  }),
+  })
+    .strict()
+    .openapi({
+      description: "Add one or more stakeholder accounts to a company.",
+    }),
 );
 export const UpdateStakeholderSchema = StakeholderSchema.omit({
   id: true,
@@ -94,6 +98,7 @@ export const UpdateStakeholderSchema = StakeholderSchema.omit({
   updatedAt: true,
 })
   .partial()
+  .strict()
   .refine(
     (data) => {
       return Object.values(data).some((value) => value !== undefined);