diff --git a/pkgs/by-name/lc/lcalc/libcxx-compat.patch b/pkgs/by-name/lc/lcalc/libcxx-compat.patch
deleted file mode 100644
index 882dc2549475..000000000000
--- a/pkgs/by-name/lc/lcalc/libcxx-compat.patch
+++ /dev/null
@@ -1,30 +0,0 @@
-diff --git a/src/libLfunction/Lcomplex.h b/src/libLfunction/Lcomplex.h
-index 363bbf4..ffecd70 100644
---- a/src/libLfunction/Lcomplex.h
-+++ b/src/libLfunction/Lcomplex.h
-@@ -56,8 +56,11 @@
- #include <cmath>
- #include <sstream>
- 
--namespace std
--{
-+#ifdef _LIBCPP_VERSION
-+_LIBCPP_BEGIN_NAMESPACE_STD
-+#else
-+namespace std {
-+#endif
-   // Forward declarations
-   template<typename _Tp> class complex;
-   template<> class complex<float>;
-@@ -1193,6 +1196,10 @@ namespace std
-   inline
-   complex<long double>::complex(const complex<double>& __z)
-   : _M_value(_ComplexT(__z._M_value)) { }
--} // namespace std
-+#ifdef _LIBCPP_VERSION
-+_LIBCPP_END_NAMESPACE_STD
-+#else
-+}
-+#endif
- 
- #endif	/* _CPP_COMPLEX */
diff --git a/pkgs/by-name/lc/lcalc/package.nix b/pkgs/by-name/lc/lcalc/package.nix
index f8fbf97b7483..af99cc33e17f 100644
--- a/pkgs/by-name/lc/lcalc/package.nix
+++ b/pkgs/by-name/lc/lcalc/package.nix
@@ -9,20 +9,16 @@
 }:
 
 stdenv.mkDerivation rec {
-  version = "2.0.5";
+  version = "2.1.0";
   pname = "lcalc";
 
   src = fetchFromGitLab {
     owner = "sagemath";
     repo = pname;
-    rev = version;
-    hash = "sha256-RxWZ7T0I9zV7jUVnL6jV/PxEoU32KY7Q1UsOL5Lonuc=";
+    tag = version;
+    hash = "sha256-v+7Uh6tPOfb3E9dqxx//RqD22XM4S/8ejS2v+D5G5pE=";
   };
 
-  # workaround for vendored GCC <complex> on libc++
-  # https://gitlab.com/sagemath/lcalc/-/issues/16
-  patches = [ ./libcxx-compat.patch ];
-
   nativeBuildInputs = [
     autoreconfHook
     gengetopt