diff --git a/.changeset/lucky-apricots-dress.md b/.changeset/lucky-apricots-dress.md
new file mode 100644
index 0000000000..777bddfc53
--- /dev/null
+++ b/.changeset/lucky-apricots-dress.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-techdocs': patch
+---
+
+Fix sizing of build log component to render all lines
diff --git a/plugins/techdocs/src/reader/components/TechDocsBuildLogs.tsx b/plugins/techdocs/src/reader/components/TechDocsBuildLogs.tsx
index dc446a55d8..01e638e59c 100644
--- a/plugins/techdocs/src/reader/components/TechDocsBuildLogs.tsx
+++ b/plugins/techdocs/src/reader/components/TechDocsBuildLogs.tsx
@@ -86,7 +86,9 @@ export const TechDocsBuildLogsDrawerContent = ({
           <Close />
         </IconButton>
       </Grid>
-      <LogViewer text={logText} classes={{ root: classes.logs }} />
+      <Grid item xs>
+        <LogViewer text={logText} classes={{ root: classes.logs }} />
+      </Grid>
     </Grid>
   );
 };