diff --git a/NEWS.md b/NEWS.md
index 0f0f51d4..da048e94 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -10,12 +10,16 @@
 
 * `css()` now fully supports setting custom CSS properties (or CSS variables) via inline styles. When the name of a value passed to `css()` starts with `--`, it will be treated as a custom CSS property and absolutely no changes will be made to the variable. For example, `css("--font_size" = "3em")` returns `--font_size:3em;` while `css(font_size = "3em")` will return `font-size:3em`. (#402)
 
-* `tagQuery()` no longer throws an error when attempting to traverse a NULL value with r-devel. (#407)
-
 ## Bug fixes
 
 * `{htmltools}` now requires `{rlang}` version 1.0.0 or higher. (#403)
 
+# htmltools 0.5.6.1
+
+## Improvements
+
+* `tagQuery()` no longer throws an error when attempting to traverse a NULL value with r-devel. (#407)
+
 # htmltools 0.5.6
 
 ## Possibly breaking changes
diff --git a/revdep/README.md b/revdep/README.md
index 05dfc5ed..ebea209d 100644
--- a/revdep/README.md
+++ b/revdep/README.md
@@ -1,19 +1,21 @@
 # Revdeps
 
-## Failed to check (12)
+## Failed to check (14)
 
-|package |version |error |warning |note |
-|:-------|:-------|:-----|:-------|:----|
-|NA      |?       |      |        |     |
-|NA      |?       |      |        |     |
-|NA      |?       |      |        |     |
-|grandR  |?       |      |        |     |
-|NA      |?       |      |        |     |
-|NA      |?       |      |        |     |
-|NA      |?       |      |        |     |
-|NA      |?       |      |        |     |
-|NA      |?       |      |        |     |
-|NA      |?       |      |        |     |
-|NA      |?       |      |        |     |
-|NA      |?       |      |        |     |
+|package   |version |error |warning |note |
+|:---------|:-------|:-----|:-------|:----|
+|NA        |?       |      |        |     |
+|checkdown |0.0.10  |1     |        |     |
+|NA        |?       |      |        |     |
+|NA        |?       |      |        |     |
+|grandR    |?       |      |        |     |
+|NA        |?       |      |        |     |
+|NA        |?       |      |        |     |
+|NA        |?       |      |        |     |
+|NA        |?       |      |        |     |
+|NA        |?       |      |        |     |
+|NA        |?       |      |        |     |
+|NA        |?       |      |        |     |
+|NA        |?       |      |        |     |
+|NA        |?       |      |        |     |
 
diff --git a/revdep/cran.md b/revdep/cran.md
index b779d489..4a0cdccb 100644
--- a/revdep/cran.md
+++ b/revdep/cran.md
@@ -1,12 +1,13 @@
 ## revdepcheck results
 
-We checked 467 reverse dependencies (456 from CRAN + 11 from Bioconductor), comparing R CMD check results across CRAN and dev versions of this package.
+We checked 479 reverse dependencies (467 from CRAN + 12 from Bioconductor), comparing R CMD check results across CRAN and dev versions of this package.
 
  * We saw 0 new problems
- * We failed to check 1 packages
+ * We failed to check 2 packages
 
 Issues with CRAN packages are summarised below.
 
 ### Failed to check
 
-* grandR (NA)
+* checkdown (NA)
+* grandR    (NA)
diff --git a/revdep/failures.md b/revdep/failures.md
index 2c941918..e8cd5226 100644
--- a/revdep/failures.md
+++ b/revdep/failures.md
@@ -32,6 +32,64 @@ Run `revdepcheck::cloud_details(, "NA")` for more info
 
 
 
+```
+# checkdown
+
+<details>
+
+* Version: 0.0.10
+* GitHub: https://github.com/agricolamz/checkdown
+* Source code: https://github.com/cran/checkdown
+* Date/Publication: 2023-09-24 07:10:02 UTC
+* Number of recursive dependencies: 33
+
+Run `revdepcheck::cloud_details(, "checkdown")` for more info
+
+</details>
+
+## In both
+
+*   checking whether package ‘checkdown’ can be installed ... ERROR
+    ```
+    Installation failed.
+    See ‘/tmp/workdir/checkdown/new/checkdown.Rcheck/00install.out’ for details.
+    ```
+
+## Installation
+
+### Devel
+
+```
+* installing *source* package ‘checkdown’ ...
+** package ‘checkdown’ successfully unpacked and MD5 sums checked
+** using staged installation
+** R
+Error in parse(outFile) : 
+  /tmp/workdir/checkdown/new/checkdown.Rcheck/00_pkg_src/checkdown/R/check_hint.R:38:39: unexpected input
+37:   hint_text <- hint_text |>
+38:       markdown::markdownToHTML(text = _
+                                          ^
+ERROR: unable to collate and parse R files for package ‘checkdown’
+* removing ‘/tmp/workdir/checkdown/new/checkdown.Rcheck/checkdown’
+
+
+```
+### CRAN
+
+```
+* installing *source* package ‘checkdown’ ...
+** package ‘checkdown’ successfully unpacked and MD5 sums checked
+** using staged installation
+** R
+Error in parse(outFile) : 
+  /tmp/workdir/checkdown/old/checkdown.Rcheck/00_pkg_src/checkdown/R/check_hint.R:38:39: unexpected input
+37:   hint_text <- hint_text |>
+38:       markdown::markdownToHTML(text = _
+                                          ^
+ERROR: unable to collate and parse R files for package ‘checkdown’
+* removing ‘/tmp/workdir/checkdown/old/checkdown.Rcheck/checkdown’
+
+
 ```
 # NA
 
@@ -458,4 +516,39 @@ Run `revdepcheck::cloud_details(, "NA")` for more info
 
 
 
+```
+# NA
+
+<details>
+
+* Version: NA
+* GitHub: NA
+* Source code: https://github.com/cran/NA
+* Number of recursive dependencies: 0
+
+Run `revdepcheck::cloud_details(, "NA")` for more info
+
+</details>
+
+## Error before installation
+
+### Devel
+
+```
+
+
+
+
+
+
+```
+### CRAN
+
+```
+
+
+
+
+
+
 ```