diff --git a/.changeset/bright-pumas-dance.md b/.changeset/bright-pumas-dance.md
new file mode 100644
index 0000000000..88955530e6
--- /dev/null
+++ b/.changeset/bright-pumas-dance.md
@@ -0,0 +1,5 @@
+---
+"@graphql-inspector/core": patch
+---
+
+Escape single quotes in diff change messages for the rest of descriptions and deprecation reasons
diff --git a/packages/core/src/diff/changes/argument.ts b/packages/core/src/diff/changes/argument.ts
index 049147b433..b1a2cc93b7 100644
--- a/packages/core/src/diff/changes/argument.ts
+++ b/packages/core/src/diff/changes/argument.ts
@@ -1,6 +1,6 @@
 import { GraphQLArgument, GraphQLField, GraphQLInterfaceType, GraphQLObjectType } from 'graphql';
 import { safeChangeForInputValue } from '../../utils/graphql.js';
-import { safeString } from '../../utils/string.js';
+import { fmt, safeString } from '../../utils/string.js';
 import {
   Change,
   ChangeType,
@@ -13,7 +13,9 @@ import {
 function buildFieldArgumentDescriptionChangedMessage(
   args: FieldArgumentDescriptionChangedChange['meta'],
 ): string {
-  return `Description for argument '${args.argumentName}' on field '${args.typeName}.${args.fieldName}' changed from '${args.oldDescription}' to '${args.newDescription}'`;
+  const oldDesc = fmt(args.oldDescription ?? 'undefined');
+  const newDesc = fmt(args.newDescription ?? 'undefined');
+  return `Description for argument '${args.argumentName}' on field '${args.typeName}.${args.fieldName}' changed from '${oldDesc}' to '${newDesc}'`;
 }
 
 export function fieldArgumentDescriptionChangedFromMeta(
diff --git a/packages/core/src/diff/changes/directive.ts b/packages/core/src/diff/changes/directive.ts
index b2c6874b4c..9b6b89c51f 100644
--- a/packages/core/src/diff/changes/directive.ts
+++ b/packages/core/src/diff/changes/directive.ts
@@ -1,6 +1,6 @@
 import { DirectiveLocationEnum, GraphQLArgument, GraphQLDirective, isNonNullType } from 'graphql';
 import { safeChangeForInputValue } from '../../utils/graphql.js';
-import { safeString } from '../../utils/string.js';
+import { fmt, safeString } from '../../utils/string.js';
 import {
   Change,
   ChangeType,
@@ -82,9 +82,9 @@ export function directiveAdded(
 function buildDirectiveDescriptionChangedMessage(
   args: DirectiveDescriptionChangedChange['meta'],
 ): string {
-  return `Directive '${args.directiveName}' description changed from '${
-    args.oldDirectiveDescription ?? 'undefined'
-  }' to '${args.newDirectiveDescription ?? 'undefined'}'`;
+  const oldDesc = fmt(args.oldDirectiveDescription ?? 'undefined');
+  const newDesc = fmt(args.newDirectiveDescription ?? 'undefined');
+  return `Directive '${args.directiveName}' description changed from '${oldDesc}' to '${newDesc}'`;
 }
 
 export function directiveDescriptionChangedFromMeta(args: DirectiveDescriptionChangedChange) {
@@ -314,7 +314,9 @@ export function directiveArgumentRemoved(
 function buildDirectiveArgumentDescriptionChangedMessage(
   args: DirectiveArgumentDescriptionChangedChange['meta'],
 ): string {
-  return `Description for argument '${args.directiveArgumentName}' on directive '${args.directiveName}' changed from '${args.oldDirectiveArgumentDescription}' to '${args.newDirectiveArgumentDescription}'`;
+  const oldDesc = fmt(args.oldDirectiveArgumentDescription ?? 'undefined');
+  const newDesc = fmt(args.newDirectiveArgumentDescription ?? 'undefined');
+  return `Description for argument '${args.directiveArgumentName}' on directive '${args.directiveName}' changed from '${oldDesc}' to '${newDesc}'`;
 }
 
 export function directiveArgumentDescriptionChangedFromMeta(
diff --git a/packages/core/src/diff/changes/field.ts b/packages/core/src/diff/changes/field.ts
index 8eda935af0..f4a07e57dc 100644
--- a/packages/core/src/diff/changes/field.ts
+++ b/packages/core/src/diff/changes/field.ts
@@ -8,6 +8,7 @@ import {
   isNonNullType,
 } from 'graphql';
 import { safeChangeForField } from '../../utils/graphql.js';
+import { fmt } from '../../utils/string.js';
 import {
   Change,
   ChangeType,
@@ -97,7 +98,9 @@ export function fieldAdded(
 }
 
 function buildFieldDescriptionChangedMessage(args: FieldDescriptionChangedChange['meta']) {
-  return `Field '${args.typeName}.${args.fieldName}' description changed from '${args.oldDescription}' to '${args.newDescription}'`;
+  const oldDesc = fmt(args.oldDescription || 'undefined');
+  const newDesc = fmt(args.newDescription || 'undefined');
+  return `Field '${args.typeName}.${args.fieldName}' description changed from '${oldDesc}' to '${newDesc}'`;
 }
 
 export function fieldDescriptionChangedFromMeta(args: FieldDescriptionChangedChange) {
@@ -129,7 +132,8 @@ export function fieldDescriptionChanged(
 }
 
 function buildFieldDescriptionAddedMessage(args: FieldDescriptionAddedChange['meta']) {
-  return `Field '${args.typeName}.${args.fieldName}' has description '${args.addedDescription}'`;
+  const desc = fmt(args.addedDescription);
+  return `Field '${args.typeName}.${args.fieldName}' has description '${desc}'`;
 }
 
 export function fieldDescriptionAddedFromMeta(args: FieldDescriptionAddedChange) {
@@ -249,7 +253,9 @@ export function fieldDeprecationRemoved(
 function buildFieldDeprecationReasonChangedMessage(
   args: FieldDeprecationReasonChangedChange['meta'],
 ) {
-  return `Deprecation reason on field '${args.typeName}.${args.fieldName}' has changed from '${args.oldDeprecationReason}' to '${args.newDeprecationReason}'`;
+  const oldReason = fmt(args.oldDeprecationReason);
+  const newReason = fmt(args.newDeprecationReason);
+  return `Deprecation reason on field '${args.typeName}.${args.fieldName}' has changed from '${oldReason}' to '${newReason}'`;
 }
 
 export function fieldDeprecationReasonChangedFromMeta(args: FieldDeprecationReasonChangedChange) {
@@ -283,7 +289,8 @@ export function fieldDeprecationReasonChanged(
 }
 
 function buildFieldDeprecationReasonAddedMessage(args: FieldDeprecationReasonAddedChange['meta']) {
-  return `Field '${args.typeName}.${args.fieldName}' has deprecation reason '${args.addedDeprecationReason}'`;
+  const reason = fmt(args.addedDeprecationReason);
+  return `Field '${args.typeName}.${args.fieldName}' has deprecation reason '${reason}'`;
 }
 
 export function fieldDeprecationReasonAddedFromMeta(args: FieldDeprecationReasonAddedChange) {
diff --git a/packages/core/src/diff/changes/input.ts b/packages/core/src/diff/changes/input.ts
index 7b8012470d..e52d1386fe 100644
--- a/packages/core/src/diff/changes/input.ts
+++ b/packages/core/src/diff/changes/input.ts
@@ -1,7 +1,7 @@
 import { GraphQLInputField, GraphQLInputObjectType, isNonNullType } from 'graphql';
 import { safeChangeForInputValue } from '../../utils/graphql.js';
 import { isDeprecated } from '../../utils/is-deprecated.js';
-import { safeString } from '../../utils/string.js';
+import { fmt, safeString } from '../../utils/string.js';
 import {
   Change,
   ChangeType,
@@ -95,7 +95,8 @@ export function inputFieldAdded(
 }
 
 function buildInputFieldDescriptionAddedMessage(args: InputFieldDescriptionAddedChange['meta']) {
-  return `Input field '${args.inputName}.${args.inputFieldName}' has description '${args.addedInputFieldDescription}'`;
+  const desc = fmt(args.addedInputFieldDescription);
+  return `Input field '${args.inputName}.${args.inputFieldName}' has description '${desc}'`;
 }
 
 export function inputFieldDescriptionAddedFromMeta(args: InputFieldDescriptionAddedChange) {
@@ -127,7 +128,8 @@ export function inputFieldDescriptionAdded(
 function buildInputFieldDescriptionRemovedMessage(
   args: InputFieldDescriptionRemovedChange['meta'],
 ) {
-  return `Description '${args.removedDescription}' was removed from input field '${args.inputName}.${args.inputFieldName}'`;
+  const desc = fmt(args.removedDescription);
+  return `Description '${desc}' was removed from input field '${args.inputName}.${args.inputFieldName}'`;
 }
 
 export function inputFieldDescriptionRemovedFromMeta(args: InputFieldDescriptionRemovedChange) {
@@ -159,7 +161,9 @@ export function inputFieldDescriptionRemoved(
 function buildInputFieldDescriptionChangedMessage(
   args: InputFieldDescriptionChangedChange['meta'],
 ) {
-  return `Input field '${args.inputName}.${args.inputFieldName}' description changed from '${args.oldInputFieldDescription}' to '${args.newInputFieldDescription}'`;
+  const oldDesc = fmt(args.oldInputFieldDescription);
+  const newDesc = fmt(args.newInputFieldDescription);
+  return `Input field '${args.inputName}.${args.inputFieldName}' description changed from '${oldDesc}' to '${newDesc}'`;
 }
 
 export function inputFieldDescriptionChangedFromMeta(args: InputFieldDescriptionChangedChange) {
diff --git a/packages/core/src/diff/changes/type.ts b/packages/core/src/diff/changes/type.ts
index 0d64b17ad6..716401bbc8 100644
--- a/packages/core/src/diff/changes/type.ts
+++ b/packages/core/src/diff/changes/type.ts
@@ -8,6 +8,7 @@ import {
   type GraphQLNamedType,
 } from 'graphql';
 import { getKind } from '../../utils/graphql.js';
+import { fmt } from '../../utils/string.js';
 import {
   Change,
   ChangeType,
@@ -134,7 +135,9 @@ export function typeKindChanged(
 }
 
 function buildTypeDescriptionChangedMessage(args: TypeDescriptionChangedChange['meta']): string {
-  return `Description '${args.oldTypeDescription}' on type '${args.typeName}' has changed to '${args.newTypeDescription}'`;
+  const oldDesc = fmt(args.oldTypeDescription);
+  const newDesc = fmt(args.newTypeDescription);
+  return `Description '${oldDesc}' on type '${args.typeName}' has changed to '${newDesc}'`;
 }
 
 export function typeDescriptionChangedFromMeta(args: TypeDescriptionChangedChange) {
@@ -164,7 +167,8 @@ export function typeDescriptionChanged(
 }
 
 function buildTypeDescriptionRemoved(args: TypeDescriptionRemovedChange['meta']): string {
-  return `Description '${args.removedTypeDescription}' was removed from object type '${args.typeName}'`;
+  const desc = fmt(args.removedTypeDescription);
+  return `Description '${desc}' was removed from object type '${args.typeName}'`;
 }
 
 export function typeDescriptionRemovedFromMeta(args: TypeDescriptionRemovedChange) {
@@ -192,7 +196,8 @@ export function typeDescriptionRemoved(
 }
 
 function buildTypeDescriptionAddedMessage(args: TypeDescriptionAddedChange['meta']): string {
-  return `Object type '${args.typeName}' has description '${args.addedTypeDescription}'`;
+  const desc = fmt(args.addedTypeDescription);
+  return `Object type '${args.typeName}' has description '${desc}'`;
 }
 
 export function typeDescriptionAddedFromMeta(args: TypeDescriptionAddedChange) {