diff --git a/handbook.md b/handbook.md
index fe95c2d..45ed3bd 100644
--- a/handbook.md
+++ b/handbook.md
@@ -4139,6 +4139,16 @@ research professor must have demonstrated considerable professional
 growth and development of qualities of leadership. This usually
 requires at least five years as an associate research professor.
 
+#### v. For Promotion to Senior Instructor
+
+(Approved by the Faculty, *October 9, 2024*)  
+(Approved by the Board of Trustees, *November 1, 2024*)  
+
+The candidate for promotion to senior instructor will normally have
+completed at least 5 years as an instructor at WPI before a promotion
+review, and must have completed at least 3 years as an instructor at
+WPI.
+
 ## 2. Promotion Criteria {#chapter-4-section-2}
 
 The principal reason for establishing academic ranks is to recognize
@@ -4408,6 +4418,9 @@ of promotion.
 
 #### i. Criteria for Promotion to Senior Instructor (from Instructor) or to Assistant Teaching Professor (from Instructor of either level) {#chapter-4-section-2ci}
 
+(Ammended by the Faculty, *October 9, 2024*)  
+(Approved by the Board of Trustees, *November 1, 2024*)  
+
 Recommendations for these promotions will be made based on evaluations
 accounting for course evaluations, project evaluations, and other
 relevant feedback.
@@ -4418,6 +4431,9 @@ discipline) and teaching credentials appropriate to the corresponding
 tenure-track rank, and must have demonstrated effective teaching
 ability.
 
+The candidate for promotion to Senior Instructor must have
+demonstrated effective teaching ability.
+
 #### ii. Criteria for Promotion to Associate Teaching Professor {#chapter-4-section-2cii}
 
 (Amended by the Faculty, *April 14, 2022*)
@@ -5075,17 +5091,29 @@ review process will be aware of potential implicit and explicit bias
 and take care to limit opportunities for such bias to influence the
 consideration of each nomination for promotion.
 
-
 ## 4. Promotion Procedures: to Senior Instructor; to Assistant Teaching Professor; to Associate Research Professor, and to (full) Research Professor {#chapter-4-section-4}
 
 ### a. Procedures for Promotion to Senior Instructor (from Instructor) or to Assistant Teaching Professor (from Instructor of either level) {#chapter-4-section-4a}
 
+(Ammended by the Faculty, *October 9, 2024*)  
+(Approved by the Board of Trustees, *November 1, 2024*)  
+
 Recommendations for promotion from Instructor to Senior Instructor or
 from Instructor (of either level) to Assistant Teaching Professor will
 be made by the Department Head and/or Program Director (with input
 from departmental and/or program faculty members) and the appropriate
 Dean, and presented to the Provost for action.
 
+Candidates for promotion to Senior Instructor should prepare a dossier
+for their Department Head or Program Director similar to that
+described in [Section 3b](chapter-4.html#chapter-4-section-3b): a
+current CV, teaching portfolio, and personal statement. Each of these
+should focus on the candidate's demonstrated effectiveness in
+teaching, detailing any teaching innovations, course improvements or
+developments, providing summary data of student course evaluations,
+and could include plans for future contributions to the academic
+mission of their department or program.
+
 ### b. Procedures for Promotion to Associate Research Professor {#chapter-4-section-4b}
 
 Recommendations for promotion to Associate Research Professor will be