diff --git a/pkgs/development/tools/rust/rust-analyzer/default.nix b/pkgs/development/tools/rust/rust-analyzer/default.nix
index d08f2acb9dec..164e57e77490 100644
--- a/pkgs/development/tools/rust/rust-analyzer/default.nix
+++ b/pkgs/development/tools/rust/rust-analyzer/default.nix
@@ -11,23 +11,20 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "rust-analyzer-unwrapped";
-  version = "2021-12-13";
-  cargoSha256 = "sha256-VF4pwSl3Wei7KxyQFOPj7hVX/NG2zImRLv4iN+ijAs8=";
+  version = "2021-12-27";
+  cargoSha256 = "sha256-yok7kLcvKvDwrdgJR0540QLJi5/zXi0NyZxhtoQ8Xno=";
 
   src = fetchFromGitHub {
     owner = "rust-analyzer";
     repo = "rust-analyzer";
     rev = version;
-    sha256 = "sha256-xt7iDfIoaBhStgqsgttyOFF4NYPQ8jeVwDoYUwrvtrA=";
+    sha256 = "sha256-/195+NsV6Mku2roi8zVy4dw8QGL6rQcnPcQ29Os8oqs=";
   };
 
   patches = [
     # Code format and git history check require more dependencies but don't really matter for packaging.
     # So just ignore them.
     ./ignore-git-and-rustfmt-tests.patch
-
-    # Remove when we have rustc >= 1.57.0.
-    ./no-1-57-map-while.patch
   ];
 
   buildAndTestSubdir = "crates/rust-analyzer";
diff --git a/pkgs/development/tools/rust/rust-analyzer/no-1-57-map-while.patch b/pkgs/development/tools/rust/rust-analyzer/no-1-57-map-while.patch
deleted file mode 100644
index 6114f51831be..000000000000
--- a/pkgs/development/tools/rust/rust-analyzer/no-1-57-map-while.patch
+++ /dev/null
@@ -1,20 +0,0 @@
---- a/crates/ide_db/src/helpers.rs
-+++ b/crates/ide_db/src/helpers.rs
-@@ -309,7 +309,7 @@ pub fn lint_eq_or_in_group(lint: &str, lint_is: &str) -> bool {
- pub fn parse_tt_as_comma_sep_paths(input: ast::TokenTree) -> Option<Vec<ast::Path>> {
-     let r_paren = input.r_paren_token();
-     let tokens =
--        input.syntax().children_with_tokens().skip(1).map_while(|it| match it.into_token() {
-+        input.syntax().children_with_tokens().skip(1).map(|it| match it.into_token() {
-             // seeing a keyword means the attribute is unclosed so stop parsing here
-             Some(tok) if tok.kind().is_keyword() => None,
-             // don't include the right token tree parenthesis if it exists
-@@ -317,7 +317,7 @@ pub fn parse_tt_as_comma_sep_paths(input: ast::TokenTree) -> Option<Vec<ast::Pat
-             // only nodes that we can find are other TokenTrees, those are unexpected in this parse though
-             None => None,
-             Some(tok) => Some(tok),
--        });
-+        }).take_while(|tok| tok.is_some()).map(|tok| tok.unwrap());
-     let input_expressions = tokens.into_iter().group_by(|tok| tok.kind() == T![,]);
-     let paths = input_expressions
-         .into_iter()