diff --git a/src/librustc_mir/build/matches/test.rs b/src/librustc_mir/build/matches/test.rs
index c8dec6d0b976..69706924dc96 100644
--- a/src/librustc_mir/build/matches/test.rs
+++ b/src/librustc_mir/build/matches/test.rs
@@ -347,7 +347,7 @@ impl<'a, 'gcx, 'tcx> Builder<'a, 'gcx, 'tcx> {
                             span: test.span,
                             ty: mty,
 
-                            // FIXME(#47184): This constant comes from user
+                            // FIXME(#54571): This constant comes from user
                             // input (a constant in a pattern).  Are
                             // there forms where users can add type
                             // annotations here?  For example, an
diff --git a/src/librustc_mir/hair/pattern/mod.rs b/src/librustc_mir/hair/pattern/mod.rs
index f78a70f6a25f..0324bfb892e4 100644
--- a/src/librustc_mir/hair/pattern/mod.rs
+++ b/src/librustc_mir/hair/pattern/mod.rs
@@ -83,7 +83,7 @@ impl<'tcx> PatternTypeProjections<'tcx> {
     }
 
     pub(crate) fn ref_binding(&self) -> Self {
-        // FIXME(#47184): ignore for now
+        // FIXME(#55401): ignore for now
         PatternTypeProjections { contents: vec![] }
     }