diff --git a/go.mod b/go.mod
index 98d1b8fc..6213cf62 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	charm.land/bubbles/v2 v2.0.0
 	charm.land/bubbletea/v2 v2.0.2
 	charm.land/lipgloss/v2 v2.0.2
-	github.com/basecamp/basecamp-sdk/go v0.7.1
+	github.com/basecamp/basecamp-sdk/go v0.7.2
 	github.com/basecamp/cli v0.2.1
 	github.com/charmbracelet/bubbles v1.0.0
 	github.com/charmbracelet/glamour v1.0.0
diff --git a/go.sum b/go.sum
index c4b70ca1..2253b353 100644
--- a/go.sum
+++ b/go.sum
@@ -23,8 +23,8 @@ github.com/aymanbagabas/go-udiff v0.4.1 h1:OEIrQ8maEeDBXQDoGCbbTTXYJMYRCRO1fnodZ
 github.com/aymanbagabas/go-udiff v0.4.1/go.mod h1:0L9PGwj20lrtmEMeyw4WKJ/TMyDtvAoK9bf2u/mNo3w=
 github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk=
 github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
-github.com/basecamp/basecamp-sdk/go v0.7.1 h1:GsQl8tEImbPMZZR8gtWQkP63a1j/7H1S6K2Zw8XZpbU=
-github.com/basecamp/basecamp-sdk/go v0.7.1/go.mod h1:3MczpIvzsnslxVqb3TVrqVe8u4Jz/RyjIsTldhmiK5Q=
+github.com/basecamp/basecamp-sdk/go v0.7.2 h1:jYY7N6rIlChT6xHp9BbvFwEH+CsNrwZH66RYmm7OinY=
+github.com/basecamp/basecamp-sdk/go v0.7.2/go.mod h1:3MczpIvzsnslxVqb3TVrqVe8u4Jz/RyjIsTldhmiK5Q=
 github.com/basecamp/cli v0.2.1 h1:8GyehPVtsTXla0oOPu4QgXRjwwzJ99prlByvyi+0HRQ=
 github.com/basecamp/cli v0.2.1/go.mod h1:p8tt/DatJ2LAzWO6N6tNfV8x3gF5T3IxDTo+U8FfWPo=
 github.com/bmatcuk/doublestar v1.1.1/go.mod h1:UD6OnuiIn0yFxxA2le/rnRU1G4RaI4UvFv1sNto9p6w=
diff --git a/internal/commands/assign.go b/internal/commands/assign.go
index 9130568a..072b4db1 100644
--- a/internal/commands/assign.go
+++ b/internal/commands/assign.go
@@ -645,7 +645,7 @@ func doAssignStep(cmd *cobra.Command, app *appctx.App, stepIDStr, assigneeID str
 	assigneeIDs = append(assigneeIDs, assigneeIDInt)
 
 	updated, err := app.Account().CardSteps().Update(cmd.Context(), stepID, &basecamp.UpdateStepRequest{
-		Assignees: assigneeIDs,
+		AssigneeIDs: assigneeIDs,
 	})
 	if err != nil {
 		return nil, convertSDKError(err)
@@ -747,7 +747,7 @@ func doUnassignStep(cmd *cobra.Command, app *appctx.App, stepIDStr string, assig
 	assigneeIDs := removeID(existingAssigneeIDs(step.Assignees), assigneeIDInt)
 
 	updated, err := app.Account().CardSteps().Update(cmd.Context(), stepID, &basecamp.UpdateStepRequest{
-		Assignees: assigneeIDs,
+		AssigneeIDs: assigneeIDs,
 	})
 	if err != nil {
 		return nil, convertSDKError(err)
diff --git a/internal/commands/cards.go b/internal/commands/cards.go
index ea7bfb29..6589ad2f 100644
--- a/internal/commands/cards.go
+++ b/internal/commands/cards.go
@@ -1927,7 +1927,7 @@ func newCardsStepCreateCmd(project *string) *cobra.Command {
 				if err != nil {
 					return err
 				}
-				req.Assignees = assigneeIDs
+				req.AssigneeIDs = assigneeIDs
 			}
 
 			step, err := app.Account().CardSteps().Create(cmd.Context(), cardIDInt, req)
@@ -2012,7 +2012,7 @@ You can pass either a step ID or a Basecamp URL:
 				if err != nil {
 					return err
 				}
-				req.Assignees = assigneeIDs
+				req.AssigneeIDs = assigneeIDs
 			}
 
 			step, err := app.Account().CardSteps().Update(cmd.Context(), stepID, req)
diff --git a/internal/version/sdk-provenance.json b/internal/version/sdk-provenance.json
index d019f847..f66b7062 100644
--- a/internal/version/sdk-provenance.json
+++ b/internal/version/sdk-provenance.json
@@ -1,9 +1,9 @@
 {
   "sdk": {
     "module": "github.com/basecamp/basecamp-sdk/go",
-    "version": "v0.7.1",
-    "revision": "55ea29ab3388",
-    "updated_at": "2026-03-25T07:00:09Z"
+    "version": "v0.7.2",
+    "revision": "0613b681ec21",
+    "updated_at": "2026-03-26T04:49:44Z"
   },
   "api": {
     "repo": "basecamp/bc3",