diff --git a/static/app/views/investigations/api.ts b/static/app/views/investigations/api.ts
index c74b8ec91454..5ce934be7f57 100644
--- a/static/app/views/investigations/api.ts
+++ b/static/app/views/investigations/api.ts
@@ -413,7 +413,7 @@ type FavoriteVariables = {
 
 type DeleteBlockVariables = {
   block: InvestigationBlock;
-  investigationVersion: number;
+  notebookVersion: number;
 };
 
 type StopExecutionVariables = {
@@ -530,7 +530,7 @@ export function useRenameInvestigationMutation(
           },
         }),
         method: 'PUT',
-        data: {title, investigationVersion: current.version},
+        data: {title, notebookVersion: current.version},
       });
     },
     onSuccess: async (updated, savedTitle, onMutateResult, context) => {
@@ -573,7 +573,7 @@ export function useDeleteInvestigationBlockMutation(
 
   return useMutation({
     ...options,
-    mutationFn: ({block, investigationVersion}) => {
+    mutationFn: ({block, notebookVersion}) => {
       return fetchMutation<void>({
         url: getApiUrl(
           '/organizations/$organizationIdOrSlug/notebooks/$notebookId/blocks/$blockId/',
@@ -587,7 +587,7 @@ export function useDeleteInvestigationBlockMutation(
         ),
         method: 'DELETE',
         data: {
-          investigationVersion,
+          notebookVersion,
           version: block.version,
         },
       });
@@ -1004,7 +1004,7 @@ export function useDeleteInvestigationMutation(
           },
         }),
         method: 'DELETE',
-        data: {investigationVersion: investigation.version},
+        data: {notebookVersion: investigation.version},
       }),
     options,
     {invalidateCandidates: true}
diff --git a/static/app/views/investigations/detail/block.tsx b/static/app/views/investigations/detail/block.tsx
index 453095c7597f..28227d980e85 100644
--- a/static/app/views/investigations/detail/block.tsx
+++ b/static/app/views/investigations/detail/block.tsx
@@ -199,7 +199,7 @@ function InvestigationNotebookBlockInner({
           onConfirm: () =>
             deleteMutation.mutate({
               block,
-              investigationVersion: investigation.version,
+              notebookVersion: investigation.version,
             }),
         }),
     },
diff --git a/static/app/views/investigations/detail/index.spec.tsx b/static/app/views/investigations/detail/index.spec.tsx
index 77b661293103..98e2eb7a337a 100644
--- a/static/app/views/investigations/detail/index.spec.tsx
+++ b/static/app/views/investigations/detail/index.spec.tsx
@@ -2855,7 +2855,7 @@ describe('Investigation detail', () => {
       expect(deleteRequest).toHaveBeenCalledWith(
         `${detailUrl}blocks/${block.id}/`,
         expect.objectContaining({
-          data: {investigationVersion: 1, version: 1},
+          data: {notebookVersion: 1, version: 1},
         })
       )
     );
@@ -2881,7 +2881,7 @@ describe('Investigation detail', () => {
       expect(deleteRequest).toHaveBeenCalledWith(
         `${detailUrl}blocks/${block.id}/`,
         expect.objectContaining({
-          data: {investigationVersion: 1, version: 1},
+          data: {notebookVersion: 1, version: 1},
         })
       )
     );
@@ -3375,7 +3375,7 @@ describe('Investigation detail', () => {
           expect.objectContaining({
             data: {
               title: 'Renamed',
-              investigationVersion: 1,
+              notebookVersion: 1,
             },
           })
         )
@@ -3474,7 +3474,7 @@ describe('Investigation detail', () => {
       expect(renameRequest).toHaveBeenCalledWith(
         detailUrl,
         expect.objectContaining({
-          data: {title: 'Saved before leaving', investigationVersion: 1},
+          data: {title: 'Saved before leaving', notebookVersion: 1},
         })
       )
     );
@@ -3661,7 +3661,7 @@ describe('Investigation detail', () => {
       await waitFor(() =>
         expect(deleteRequest).toHaveBeenCalledWith(
           detailUrl,
-          expect.objectContaining({data: {investigationVersion: 1}})
+          expect.objectContaining({data: {notebookVersion: 1}})
         )
       );
       await act(() => jest.advanceTimersByTimeAsync(600));
diff --git a/static/app/views/investigations/index.spec.tsx b/static/app/views/investigations/index.spec.tsx
index f1b5d87c1dcf..c55eec5d4001 100644
--- a/static/app/views/investigations/index.spec.tsx
+++ b/static/app/views/investigations/index.spec.tsx
@@ -523,7 +523,7 @@ describe('Explore Investigations', () => {
     await waitFor(() =>
       expect(deleteRequest).toHaveBeenCalledWith(
         '/organizations/org-slug/notebooks/1/',
-        expect.objectContaining({data: {investigationVersion: 3}})
+        expect.objectContaining({data: {notebookVersion: 3}})
       )
     );
     await waitFor(() =>