diff --git a/gradle.properties b/gradle.properties
index 85f36de68..4353e16eb 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
 # Mod properties
-mod_version=1.89.0
+mod_version=1.89.1
 
 # Minecraft properties (update mods.toml when changing)
 mc_version=1.14.4
diff --git a/src/main/java/dan200/computercraft/client/render/TileEntityMonitorRenderer.java b/src/main/java/dan200/computercraft/client/render/TileEntityMonitorRenderer.java
index 1e2d9fedc..816b37e63 100644
--- a/src/main/java/dan200/computercraft/client/render/TileEntityMonitorRenderer.java
+++ b/src/main/java/dan200/computercraft/client/render/TileEntityMonitorRenderer.java
@@ -169,7 +169,7 @@ private static void renderTerminal( ClientMonitor monitor, float xMargin, float
                     }
 
                     ByteBuffer monitorBuffer = tboContents;
-                    monitorBuffer.position( 0 );
+                    monitorBuffer.clear();
                     for( int y = 0; y < height; y++ )
                     {
                         TextBuffer text = terminal.getLine( y ), textColour = terminal.getTextColourLine( y ), background = terminal.getBackgroundColourLine( y );
diff --git a/src/main/resources/data/computercraft/lua/rom/help/changelog.txt b/src/main/resources/data/computercraft/lua/rom/help/changelog.txt
index 4ec707c88..81fcebce0 100644
--- a/src/main/resources/data/computercraft/lua/rom/help/changelog.txt
+++ b/src/main/resources/data/computercraft/lua/rom/help/changelog.txt
@@ -1,3 +1,7 @@
+# New features in CC: Tweaked 1.89.1
+
+* Fix crashes when rendering monitors of varying sizes.
+
 # New features in CC: Tweaked 1.89.0
 
 * Compress monitor data, reducing network traffic by a significant amount.
diff --git a/src/main/resources/data/computercraft/lua/rom/help/whatsnew.txt b/src/main/resources/data/computercraft/lua/rom/help/whatsnew.txt
index e5591fe97..ddb0a9fe9 100644
--- a/src/main/resources/data/computercraft/lua/rom/help/whatsnew.txt
+++ b/src/main/resources/data/computercraft/lua/rom/help/whatsnew.txt
@@ -1,11 +1,5 @@
-New features in CC: Tweaked 1.89.0
+New features in CC: Tweaked 1.89.1
 
-* Compress monitor data, reducing network traffic by a significant amount.
-* Allow limiting the bandwidth monitor updates use.
-* Several optimisations to monitor rendering (@Lignum).
-* Expose block and item tags to turtle.inspect and turtle.getItemDetail.
-
-And several bug fixes:
-* Fix settings.load failing on defined settings.
+* Fix crashes when rendering monitors of varying sizes.
 
 Type "help changelog" to see the full version history.