diff --git a/src/components/Combobox/Combobox.tsx b/src/components/Combobox/Combobox.tsx
index 8f9f5fb97..a0521df80 100644
--- a/src/components/Combobox/Combobox.tsx
+++ b/src/components/Combobox/Combobox.tsx
@@ -411,7 +411,7 @@ function Combobox<T>({
               data-testid="combobox-caret"
               disabled={disabled}
               active={open}
-              onMouseDown={(ev) => {
+              onMouseDown={(ev: React.MouseEvent<HTMLButtonElement>) => {
                 ev.stopPropagation();
                 setOpen(!open);
               }}
diff --git a/src/components/HasManyFields/HasManyFieldsRow.tsx b/src/components/HasManyFields/HasManyFieldsRow.tsx
index 06729526a..9b0f1c589 100644
--- a/src/components/HasManyFields/HasManyFieldsRow.tsx
+++ b/src/components/HasManyFields/HasManyFieldsRow.tsx
@@ -53,7 +53,7 @@ const HasManyFieldsRow = ({
     <Button
       id={id}
       color="danger"
-      onClick={(e) => e.preventDefault()}
+      onClick={(e: React.MouseEvent<HTMLButtonElement>) => e.preventDefault()}
       outline
       className="p-2 disabled align-self-stretch"
     >