diff --git a/Cargo.lock b/Cargo.lock
index c7f39357534..0369442f11c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2779,9 +2779,9 @@ dependencies = [
 
 [[package]]
 name = "pulldown-cmark"
-version = "0.9.2"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d9cc634bc78768157b5cbfe988ffcd1dcba95cd2b2f03a88316c08c6d00ed63"
+checksum = "77a1a2f1f0a7ecff9c31abbe177637be0e97a0aef46cf8738ece09327985d998"
 dependencies = [
  "bitflags",
  "memchr",
diff --git a/compiler/rustc_resolve/Cargo.toml b/compiler/rustc_resolve/Cargo.toml
index 1c16d85f1b9..46da0aa2853 100644
--- a/compiler/rustc_resolve/Cargo.toml
+++ b/compiler/rustc_resolve/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 
 [dependencies]
 bitflags = "1.2.1"
-pulldown-cmark = { version = "0.9.2", default-features = false }
+pulldown-cmark = { version = "0.9.3", default-features = false }
 rustc_arena = { path = "../rustc_arena" }
 rustc_ast = { path = "../rustc_ast" }
 rustc_ast_pretty = { path = "../rustc_ast_pretty" }
diff --git a/src/doc/rustdoc/src/how-to-write-documentation.md b/src/doc/rustdoc/src/how-to-write-documentation.md
index 38fd1db5c21..1fa9f814476 100644
--- a/src/doc/rustdoc/src/how-to-write-documentation.md
+++ b/src/doc/rustdoc/src/how-to-write-documentation.md
@@ -165,15 +165,15 @@ extensions:
 ### Strikethrough
 
 Text may be rendered with a horizontal line through the center by wrapping the
-text with two tilde characters on each side:
+text with one or two tilde characters on each side:
 
 ```text
-An example of ~~strikethrough text~~.
+An example of ~~strikethrough text~~. You can also use ~single tildes~.
 ```
 
 This example will render as:
 
-> An example of ~~strikethrough text~~.
+> An example of ~~strikethrough text~~. You can also use ~single tildes~.
 
 This follows the [GitHub Strikethrough extension][strikethrough].
 
diff --git a/tests/rustdoc-ui/unescaped_backticks.rs b/tests/rustdoc-ui/unescaped_backticks.rs
index f1ad7c8d4c7..e99cd1f3d58 100644
--- a/tests/rustdoc-ui/unescaped_backticks.rs
+++ b/tests/rustdoc-ui/unescaped_backticks.rs
@@ -340,3 +340,15 @@ id! {
     /// level changes.
     pub mod tracing_macro {}
 }
+
+/// Regression test for <https://github.com/rust-lang/rust/issues/111117>
+pub mod trillium_server_common {
+    /// One-indexed, because the first CloneCounter is included. If you don't
+    /// want the original to count, construct a [``CloneCounterObserver`]
+    /// instead and use [`CloneCounterObserver::counter`] to increment.
+    //~^ ERROR unescaped backtick
+    pub struct CloneCounter;
+
+    /// This is used by the above.
+    pub struct CloneCounterObserver;
+}
diff --git a/tests/rustdoc-ui/unescaped_backticks.stderr b/tests/rustdoc-ui/unescaped_backticks.stderr
index e629dbc34e9..bf1f18889c4 100644
--- a/tests/rustdoc-ui/unescaped_backticks.stderr
+++ b/tests/rustdoc-ui/unescaped_backticks.stderr
@@ -341,6 +341,18 @@ LL | |     /// level changes.
             change: [`rebuild_interest_cache`][rebuild] is called after the value of the max
            to this: [`rebuild_interest_cache\`][rebuild] is called after the value of the max
 
+error: unescaped backtick
+  --> $DIR/unescaped_backticks.rs:348:56
+   |
+LL |     /// instead and use [`CloneCounterObserver::counter`] to increment.
+   |                                                        ^
+   |
+   = help: the opening or closing backtick of an inline code may be missing
+help: if you meant to use a literal backtick, escape it
+   |
+LL |     /// instead and use [`CloneCounterObserver::counter\`] to increment.
+   |                                                        +
+
 error: unescaped backtick
   --> $DIR/unescaped_backticks.rs:11:5
    |
@@ -955,5 +967,5 @@ help: if you meant to use a literal backtick, escape it
 LL | /// | table`( | )\`body |
    |                  +
 
-error: aborting due to 63 previous errors
+error: aborting due to 64 previous errors
 
diff --git a/tests/rustdoc/strikethrough-in-summary.rs b/tests/rustdoc/strikethrough-in-summary.rs
deleted file mode 100644
index cb6cd0e7ba6..00000000000
--- a/tests/rustdoc/strikethrough-in-summary.rs
+++ /dev/null
@@ -1,6 +0,0 @@
-#![crate_name = "foo"]
-
-// @has foo/index.html '//del' 'strike'
-
-/// ~~strike~~
-pub fn strike() {}
diff --git a/tests/rustdoc/test-strikethrough.rs b/tests/rustdoc/test-strikethrough.rs
index c7855729a98..58162153b9e 100644
--- a/tests/rustdoc/test-strikethrough.rs
+++ b/tests/rustdoc/test-strikethrough.rs
@@ -1,6 +1,13 @@
 #![crate_name = "foo"]
 
-// @has foo/fn.f.html
-// @has - //del "Y"
-/// ~~Y~~
+// Test that strikethrough works with single and double tildes and that it shows up on
+// the item's dedicated page as well as the parent module's summary of items.
+
+// @has foo/index.html //del 'strike'
+// @has foo/index.html //del 'through'
+
+// @has foo/fn.f.html //del 'strike'
+// @has foo/fn.f.html //del 'through'
+
+/// ~~strike~~ ~through~
 pub fn f() {}