diff --git a/cmake.deps/deps.txt b/cmake.deps/deps.txt
index c373f81350..e8dbebc055 100644
--- a/cmake.deps/deps.txt
+++ b/cmake.deps/deps.txt
@@ -53,8 +53,8 @@ TREESITTER_QUERY_URL https://github.com/tree-sitter-grammars/tree-sitter-query/a
 TREESITTER_QUERY_SHA256 5a0ee26c4af94adb9ab850a518613f75e7040354f5b049a5b85457ebf579ae8b
 TREESITTER_PYTHON_URL https://github.com/tree-sitter/tree-sitter-python/archive/v0.21.0.tar.gz
 TREESITTER_PYTHON_SHA256 720304a603271fa89e4430a14d6a81a023d6d7d1171b1533e49c0ab44f1e1c13
-TREESITTER_BASH_URL https://github.com/tree-sitter/tree-sitter-bash/archive/v0.20.5.tar.gz
-TREESITTER_BASH_SHA256 7bba80ac64a18ec1b3f47e738e6a168f065c3cb4244234eff1b773816008f5a7
+TREESITTER_BASH_URL https://github.com/tree-sitter/tree-sitter-bash/archive/v0.21.0.tar.gz
+TREESITTER_BASH_SHA256 f0515efda839cfede851adb24ac154227fbc0dfb60c6c11595ecfa9087d43ceb
 TREESITTER_MARKDOWN_URL https://github.com/MDeiml/tree-sitter-markdown/archive/v0.1.7.tar.gz
 TREESITTER_MARKDOWN_SHA256 7d0e7f7ed4516ed0816f9c304e2e7fa93b2c16f9280416c2fb64dc4efd9c5f83
 TREESITTER_URL https://github.com/tree-sitter/tree-sitter/archive/v0.22.2.tar.gz
diff --git a/runtime/queries/bash/highlights.scm b/runtime/queries/bash/highlights.scm
index b4360ce7e1..86f9a67344 100644
--- a/runtime/queries/bash/highlights.scm
+++ b/runtime/queries/bash/highlights.scm
@@ -68,10 +68,6 @@
   argument: "$" @string) ; bare dollar
 
 (concatenation
-  [
-    (simple_expansion)
-    (expansion)
-  ]
   (word) @string)
 
 [
@@ -110,7 +106,15 @@
 
 ; trap -l
 ((word) @constant.builtin
-  (#match? @constant.builtin "^SIG(HUP|INT|QUIT|ILL|TRAP|ABRT|BUS|FPE|KILL|USR[12]|SEGV|PIPE|ALRM|TERM|STKFLT|CHLD|CONT|STOP|TSTP|TT(IN|OU)|URG|XCPU|XFSZ|VTALRM|PROF|WINCH|IO|PWR|SYS|RTMIN([+]([1-9]|1[0-5]))?|RTMAX(-([1-9]|1[0-4]))?)$"))
+  (#any-of? @constant.builtin
+    "SIGHUP" "SIGINT" "SIGQUIT" "SIGILL" "SIGTRAP" "SIGABRT" "SIGBUS" "SIGFPE" "SIGKILL" "SIGUSR1"
+    "SIGSEGV" "SIGUSR2" "SIGPIPE" "SIGALRM" "SIGTERM" "SIGSTKFLT" "SIGCHLD" "SIGCONT" "SIGSTOP"
+    "SIGTSTP" "SIGTTIN" "SIGTTOU" "SIGURG" "SIGXCPU" "SIGXFSZ" "SIGVTALRM" "SIGPROF" "SIGWINCH"
+    "SIGIO" "SIGPWR" "SIGSYS" "SIGRTMIN" "SIGRTMIN+1" "SIGRTMIN+2" "SIGRTMIN+3" "SIGRTMIN+4"
+    "SIGRTMIN+5" "SIGRTMIN+6" "SIGRTMIN+7" "SIGRTMIN+8" "SIGRTMIN+9" "SIGRTMIN+10" "SIGRTMIN+11"
+    "SIGRTMIN+12" "SIGRTMIN+13" "SIGRTMIN+14" "SIGRTMIN+15" "SIGRTMAX-14" "SIGRTMAX-13"
+    "SIGRTMAX-12" "SIGRTMAX-11" "SIGRTMAX-10" "SIGRTMAX-9" "SIGRTMAX-8" "SIGRTMAX-7" "SIGRTMAX-6"
+    "SIGRTMAX-5" "SIGRTMAX-4" "SIGRTMAX-3" "SIGRTMAX-2" "SIGRTMAX-1" "SIGRTMAX"))
 
 ((word) @boolean
   (#any-of? @boolean "true" "false"))
@@ -156,19 +160,14 @@
 (command_name
   (word) @function.call)
 
-((command_name
-  (word) @function.builtin)
-  ; format-ignore
+(command_name
+  (word) @function.builtin
   (#any-of? @function.builtin
-    "alias" "bg" "bind" "break" "builtin" "caller" "cd"
-    "command" "compgen" "complete" "compopt" "continue"
-    "coproc" "dirs" "disown" "echo" "enable" "eval"
-    "exec" "exit" "fc" "fg" "getopts" "hash" "help"
-    "history" "jobs" "kill" "let" "logout" "mapfile"
-    "popd" "printf" "pushd" "pwd" "read" "readarray"
-    "return" "set" "shift" "shopt" "source" "suspend"
-    "test" "time" "times" "trap" "type" "typeset"
-    "ulimit" "umask" "unalias" "wait"))
+    "alias" "bg" "bind" "break" "builtin" "caller" "cd" "command" "compgen" "complete" "compopt"
+    "continue" "coproc" "dirs" "disown" "echo" "enable" "eval" "exec" "exit" "fc" "fg" "getopts"
+    "hash" "help" "history" "jobs" "kill" "let" "logout" "mapfile" "popd" "printf" "pushd" "pwd"
+    "read" "readarray" "return" "set" "shift" "shopt" "source" "suspend" "test" "time" "times"
+    "trap" "type" "typeset" "ulimit" "umask" "unalias" "wait"))
 
 (command
   argument:
diff --git a/runtime/queries/bash/injections.scm b/runtime/queries/bash/injections.scm
new file mode 100644
index 0000000000..427b414958
--- /dev/null
+++ b/runtime/queries/bash/injections.scm
@@ -0,0 +1,3 @@
+(heredoc_redirect
+  (heredoc_body) @injection.content
+  (heredoc_end) @injection.language)