diff --git a/.changeset/fast-kids-attend.md b/.changeset/fast-kids-attend.md
new file mode 100644
index 0000000000..2173ba9c03
--- /dev/null
+++ b/.changeset/fast-kids-attend.md
@@ -0,0 +1,7 @@
+---
+"@khanacademy/perseus-core": minor
+"@khanacademy/perseus": patch
+"@khanacademy/perseus-editor": patch
+---
+
+Move Passage widgets upgrade logic to Perseus Core
diff --git a/packages/perseus-core/src/index.ts b/packages/perseus-core/src/index.ts
index a9c9e71cce..044e55296d 100644
--- a/packages/perseus-core/src/index.ts
+++ b/packages/perseus-core/src/index.ts
@@ -36,6 +36,12 @@ export {default as expressionLogic} from "./widgets/expression";
 export type {ExpressionDefaultWidgetOptions} from "./widgets/expression";
 export {default as measurerLogic} from "./widgets/measurer";
 export type {MeasurerDefaultWidgetOptions} from "./widgets/measurer";
+export {default as passageLogic} from "./widgets/passage";
+export type {PassageDefaultWidgetOptions} from "./widgets/passage";
+export {default as passageRefLogic} from "./widgets/passage-ref";
+export type {PassageRefDefaultWidgetOptions} from "./widgets/passage-ref";
+export {default as passageRefTargetLogic} from "./widgets/passage-ref-target";
+export type {PassageRefTargetDefaultWidgetOptions} from "./widgets/passage-ref-target";
 export {default as radioLogic} from "./widgets/radio";
 export type {RadioDefaultWidgetOptions} from "./widgets/radio";
 
diff --git a/packages/perseus-core/src/widgets/passage-ref-target/index.ts b/packages/perseus-core/src/widgets/passage-ref-target/index.ts
new file mode 100644
index 0000000000..b204baf665
--- /dev/null
+++ b/packages/perseus-core/src/widgets/passage-ref-target/index.ts
@@ -0,0 +1,18 @@
+import type {PerseusPassageRefTargetWidgetOptions} from "../../data-schema";
+import type {WidgetLogic} from "../logic-export.types";
+
+export type PassageRefTargetDefaultWidgetOptions = Pick<
+    PerseusPassageRefTargetWidgetOptions,
+    "content"
+>;
+
+const defaultWidgetOptions: PassageRefTargetDefaultWidgetOptions = {
+    content: "",
+};
+
+const passageRefTargetWidgetLogic: WidgetLogic = {
+    name: "passageRefTarget",
+    defaultWidgetOptions,
+};
+
+export default passageRefTargetWidgetLogic;
diff --git a/packages/perseus-core/src/widgets/passage-ref/index.ts b/packages/perseus-core/src/widgets/passage-ref/index.ts
new file mode 100644
index 0000000000..52d1b74a71
--- /dev/null
+++ b/packages/perseus-core/src/widgets/passage-ref/index.ts
@@ -0,0 +1,13 @@
+import {currentVersion, defaultWidgetOptions} from "./passage-ref-upgrade";
+
+import type {WidgetLogic} from "../logic-export.types";
+
+export type {PassageRefDefaultWidgetOptions} from "./passage-ref-upgrade";
+
+const passageRefWidgetLogic: WidgetLogic = {
+    name: "passageRef",
+    version: currentVersion,
+    defaultWidgetOptions: defaultWidgetOptions,
+};
+
+export default passageRefWidgetLogic;
diff --git a/packages/perseus-core/src/widgets/passage-ref/passage-ref-upgrade.ts b/packages/perseus-core/src/widgets/passage-ref/passage-ref-upgrade.ts
new file mode 100644
index 0000000000..9588dc0633
--- /dev/null
+++ b/packages/perseus-core/src/widgets/passage-ref/passage-ref-upgrade.ts
@@ -0,0 +1,14 @@
+import type {PerseusPassageRefWidgetOptions} from "../../data-schema";
+
+export const currentVersion = {major: 0, minor: 1};
+
+export type PassageRefDefaultWidgetOptions = Pick<
+    PerseusPassageRefWidgetOptions,
+    "passageNumber" | "referenceNumber" | "summaryText"
+>;
+
+export const defaultWidgetOptions: PassageRefDefaultWidgetOptions = {
+    passageNumber: 1,
+    referenceNumber: 1,
+    summaryText: "",
+};
diff --git a/packages/perseus-core/src/widgets/passage/index.ts b/packages/perseus-core/src/widgets/passage/index.ts
new file mode 100644
index 0000000000..98b0cd9f22
--- /dev/null
+++ b/packages/perseus-core/src/widgets/passage/index.ts
@@ -0,0 +1,21 @@
+import type {PerseusPassageWidgetOptions} from "../../data-schema";
+import type {WidgetLogic} from "../logic-export.types";
+
+export type PassageDefaultWidgetOptions = Pick<
+    PerseusPassageWidgetOptions,
+    "passageTitle" | "passageText" | "footnotes" | "showLineNumbers"
+>;
+
+const defaultWidgetOptions: PassageDefaultWidgetOptions = {
+    passageTitle: "",
+    passageText: "",
+    footnotes: "",
+    showLineNumbers: true,
+};
+
+const passageWidgetLogic: WidgetLogic = {
+    name: "passage",
+    defaultWidgetOptions,
+};
+
+export default passageWidgetLogic;
diff --git a/packages/perseus-editor/src/widgets/passage-editor.tsx b/packages/perseus-editor/src/widgets/passage-editor.tsx
index c0755a1b32..824a687f05 100644
--- a/packages/perseus-editor/src/widgets/passage-editor.tsx
+++ b/packages/perseus-editor/src/widgets/passage-editor.tsx
@@ -1,4 +1,5 @@
 import {components, Changeable, EditorJsonify} from "@khanacademy/perseus";
+import {passageLogic} from "@khanacademy/perseus-core";
 import {Checkbox} from "@khanacademy/wonder-blocks-form";
 import PropTypes from "prop-types";
 import * as React from "react";
@@ -6,6 +7,8 @@ import _ from "underscore";
 
 import Editor from "../editor";
 
+import type {PassageDefaultWidgetOptions} from "@khanacademy/perseus-core";
+
 const {InfoTip} = components;
 
 type Props = any;
@@ -21,12 +24,8 @@ class PassageEditor extends React.Component<Props> {
 
     static widgetName = "passage" as const;
 
-    static defaultProps: Props = {
-        passageTitle: "",
-        passageText: "",
-        footnotes: "",
-        showLineNumbers: true,
-    };
+    static defaultProps: PassageDefaultWidgetOptions =
+        passageLogic.defaultWidgetOptions;
 
     change: (arg1: any, arg2: any, arg3: any) => any = (...args) => {
         return Changeable.change.apply(this, args);
diff --git a/packages/perseus-editor/src/widgets/passage-ref-editor.tsx b/packages/perseus-editor/src/widgets/passage-ref-editor.tsx
index 4f9ac43b67..79bd1ee272 100644
--- a/packages/perseus-editor/src/widgets/passage-ref-editor.tsx
+++ b/packages/perseus-editor/src/widgets/passage-ref-editor.tsx
@@ -1,8 +1,11 @@
 /* eslint-disable @khanacademy/ts-no-error-suppressions */
 import {components, Changeable, EditorJsonify} from "@khanacademy/perseus";
+import {passageRefLogic} from "@khanacademy/perseus-core";
 import PropTypes from "prop-types";
 import * as React from "react";
 
+import type {PassageRefDefaultWidgetOptions} from "@khanacademy/perseus-core";
+
 const {InfoTip, NumberInput, TextInput} = components;
 
 type Props = any;
@@ -17,11 +20,8 @@ class PassageRefEditor extends React.Component<Props> {
 
     static widgetName = "passage-ref" as const;
 
-    static defaultProps: Props = {
-        passageNumber: 1,
-        referenceNumber: 1,
-        summaryText: "",
-    };
+    static defaultProps: PassageRefDefaultWidgetOptions =
+        passageRefLogic.defaultWidgetOptions;
 
     change: (arg1: any, arg2: any, arg3: any) => any = (...args) => {
         return Changeable.change.apply(this, args);
diff --git a/packages/perseus-editor/src/widgets/passage-ref-target-editor.tsx b/packages/perseus-editor/src/widgets/passage-ref-target-editor.tsx
index 3ef0024ea0..8265e6c535 100644
--- a/packages/perseus-editor/src/widgets/passage-ref-target-editor.tsx
+++ b/packages/perseus-editor/src/widgets/passage-ref-target-editor.tsx
@@ -1,4 +1,8 @@
 import {Changeable, EditorJsonify} from "@khanacademy/perseus";
+import {
+    passageRefTargetLogic,
+    type PassageRefTargetDefaultWidgetOptions,
+} from "@khanacademy/perseus-core";
 import PropTypes from "prop-types";
 import * as React from "react";
 import _ from "underscore";
@@ -13,9 +17,8 @@ class PassageRefTargetEditor extends React.Component<Props> {
 
     static widgetName = "passage-ref-target" as const;
 
-    static defaultProps: Props = {
-        content: "",
-    };
+    static defaultProps: PassageRefTargetDefaultWidgetOptions =
+        passageRefTargetLogic.defaultWidgetOptions;
 
     change: (arg1: any, arg2: any, arg3: any) => any = (...args) => {
         return Changeable.change.apply(this, args);
diff --git a/packages/perseus/src/widgets/interactive-graphs/interactive-graph-question-builder.ts b/packages/perseus/src/widgets/interactive-graphs/interactive-graph-question-builder.ts
index 26e03de0ef..2fa43ae8d4 100644
--- a/packages/perseus/src/widgets/interactive-graphs/interactive-graph-question-builder.ts
+++ b/packages/perseus/src/widgets/interactive-graphs/interactive-graph-question-builder.ts
@@ -91,10 +91,6 @@ class InteractiveGraphQuestionBuilder {
                         lockedFigures: this.lockedFigures,
                     },
                     type: "interactive-graph",
-                    version: {
-                        major: 0,
-                        minor: 0,
-                    },
                 },
             },
         };
diff --git a/packages/perseus/src/widgets/mock-widgets/mock-asset-loading-widget.tsx b/packages/perseus/src/widgets/mock-widgets/mock-asset-loading-widget.tsx
index 8a8dc69cfe..38608404fa 100644
--- a/packages/perseus/src/widgets/mock-widgets/mock-asset-loading-widget.tsx
+++ b/packages/perseus/src/widgets/mock-widgets/mock-asset-loading-widget.tsx
@@ -18,7 +18,6 @@ export const mockedAssetItem: PerseusItem = {
                 static: false,
                 graded: true,
                 options: Object.freeze({value: ""}),
-                version: {major: 1, minor: 0},
             },
         },
     },
diff --git a/packages/perseus/src/widgets/passage-ref-target/passage-ref-target.tsx b/packages/perseus/src/widgets/passage-ref-target/passage-ref-target.tsx
index d19c3a37c8..5565aa5c6e 100644
--- a/packages/perseus/src/widgets/passage-ref-target/passage-ref-target.tsx
+++ b/packages/perseus/src/widgets/passage-ref-target/passage-ref-target.tsx
@@ -67,7 +67,6 @@ export default {
     transform: (editorProps: any): any => {
         return _.pick(editorProps, "content");
     },
-    version: {major: 0, minor: 0},
     isLintable: true,
     // TODO: things that aren't interactive shouldn't need scoring functions
     scorer: () => scoreNoop(),
diff --git a/packages/perseus/src/widgets/passage-ref/passage-ref.tsx b/packages/perseus/src/widgets/passage-ref/passage-ref.tsx
index 7df272a274..c7409a929b 100644
--- a/packages/perseus/src/widgets/passage-ref/passage-ref.tsx
+++ b/packages/perseus/src/widgets/passage-ref/passage-ref.tsx
@@ -1,3 +1,7 @@
+import {
+    passageRefLogic,
+    type PerseusPassageRefWidgetOptions,
+} from "@khanacademy/perseus-core";
 import * as React from "react";
 import _ from "underscore";
 
@@ -10,7 +14,6 @@ import {isPassageWidget} from "../passage/utils";
 
 import type {ChangeFn, Widget, WidgetExports, WidgetProps} from "../../types";
 import type {PassageRefPromptJSON} from "../../widget-ai-utils/passage-ref/passage-ref-ai-utils";
-import type {PerseusPassageRefWidgetOptions} from "@khanacademy/perseus-core";
 import type {PropsFor} from "@khanacademy/wonder-blocks-core";
 
 const EN_DASH = "\u2013";
@@ -185,7 +188,7 @@ export default {
         referenceNumber: widgetOptions.referenceNumber,
         summaryText: widgetOptions.summaryText,
     }),
-    version: {major: 0, minor: 1},
+    version: passageRefLogic.version,
     // TODO: things that aren't interactive shouldn't need scoring functions
     scorer: () => scoreNoop(),
 } satisfies WidgetExports<typeof PassageRef>;