diff --git a/mdbook/src/preamble/version-history.md b/mdbook/src/preamble/version-history.md
index aa9a85c..af5d8f7 100644
--- a/mdbook/src/preamble/version-history.md
+++ b/mdbook/src/preamble/version-history.md
@@ -1,6 +1,10 @@
 Version history
 ===============
 
+Version 1.50 (2022):
+
+-   Added `mensuralRestMaximaImperfecta` (U+E9F9) to [Medieval and Renaissance rests](../tables/medieval-and-renaissance-rests.md) range ([#226](https://github.com/w3c/smufl/issues/226))
+
 Version 1.40 (2021-03-15):
 
 -   Added new font metadata values for font design size, barline separation, H-bar thickness, and preferred text fonts to accompany music fonts ([#95](https://github.com/w3c/smufl/issues/95), [#102](https://github.com/w3c/smufl/issues/102), [#124](https://github.com/w3c/smufl/issues/124), [#131](https://github.com/w3c/smufl/issues/131))
diff --git a/mdbook/src/tables/medieval-and-renaissance-rests.md b/mdbook/src/tables/medieval-and-renaissance-rests.md
index a5ca223..3e9e839 100644
--- a/mdbook/src/tables/medieval-and-renaissance-rests.md
+++ b/mdbook/src/tables/medieval-and-renaissance-rests.md
@@ -3,8 +3,8 @@ Medieval and Renaissance rests (U+E9F0–U+E9FF)
 
 | **Glyph** | **Description** | **Glyph** | **Description**
 | :-------: | --------------- | :-------: | ---------------
-|<span class="bravura_large">&#xe9f0;</span> | **U+E9F0**<br/>*mensuralRestMaxima*<br/>Maxima rest | <span class="bravura_large">&#xe9f1;</span> | **U+E9F1** (and U+1D1C1)<br/>*mensuralRestLongaPerfecta*<br/>Longa perfecta rest
+|<span class="bravura_large">&#xe9f0;</span> | **U+E9F0**<br/>*mensuralRestMaxima*<br/>Maxima perfecta rest | <span class="bravura_large">&#xe9f1;</span> | **U+E9F1** (and U+1D1C1)<br/>*mensuralRestLongaPerfecta*<br/>Longa perfecta rest
 |<span class="bravura_large">&#xe9f2;</span> | **U+E9F2** (and U+1D1C2)<br/>*mensuralRestLongaImperfecta*<br/>Longa imperfecta rest | <span class="bravura_large">&#xe9f3;</span> | **U+E9F3** (and U+1D1C3)<br/>*mensuralRestBrevis*<br/>Brevis rest
 |<span class="bravura_large">&#xe9f4;</span> | **U+E9F4** (and U+1D1C4)<br/>*mensuralRestSemibrevis*<br/>Semibrevis rest | <span class="bravura_large">&#xe9f5;</span> | **U+E9F5** (and U+1D1C5)<br/>*mensuralRestMinima*<br/>Minima rest
 |<span class="bravura_large">&#xe9f6;</span> | **U+E9F6** (and U+1D1C6)<br/>*mensuralRestSemiminima*<br/>Semiminima rest | <span class="bravura_large">&#xe9f7;</span> | **U+E9F7**<br/>*mensuralRestFusa*<br/>Fusa rest
-|<span class="bravura_large">&#xe9f8;</span> | **U+E9F8**<br/>*mensuralRestSemifusa*<br/>Semifusa rest | &nbsp; | &nbsp;
\ No newline at end of file
+|<span class="bravura_large">&#xe9f8;</span> | **U+E9F8**<br/>*mensuralRestSemifusa*<br/>Semifusa rest | <span class="bravura_large">&#xe9f7;</span> | **U+E9F9**<br/>*mensuralRestMaximaImperfecta*<br/>Maxima imperfecta rest
\ No newline at end of file