diff --git a/dev/nix/shell.nix b/dev/nix/shell.nix
index 5823bc01f..8dc22b4c1 100644
--- a/dev/nix/shell.nix
+++ b/dev/nix/shell.nix
@@ -24,6 +24,8 @@
         RUST_SRC_PATH = "${rustToolchain}/lib/rustlib/src/rust/library";
         LIBCLANG_PATH = "${pkgs.libclang.lib}/lib";
         LD_LIBRARY_PATH = "${rustToolchain}/lib";
+        # https://github.com/NixOS/nixpkgs/issues/370494#issuecomment-2625163369
+        CFLAGS = "-DJEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE";
 
         # envs needed in order to construct some of the rust crates
         ROCKSDB_LIB_DIR = "${pkgs.rocksdb}/lib/";
diff --git a/flake.lock b/flake.lock
index 51a8e13c6..365e4787f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -58,11 +58,11 @@
         "rust-analyzer-src": "rust-analyzer-src"
       },
       "locked": {
-        "lastModified": 1724826636,
-        "narHash": "sha256-hz8Szf5J9oQg6EeMhHE/eKuexoHPiDbmOZTPvijYwyM=",
+        "lastModified": 1740378829,
+        "narHash": "sha256-cwmm7F73aQFJY6YN1roNibNKwxT6FlfXkG3MEbpSp7Q=",
         "owner": "nix-community",
         "repo": "fenix",
-        "rev": "3454a665ff4dd29cf618e6a2e53065370876297f",
+        "rev": "92823f1b0c919d7e2d806956aaf98e90f3761ab7",
         "type": "github"
       },
       "original": {
@@ -165,11 +165,11 @@
     "rust-analyzer-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1724761543,
-        "narHash": "sha256-G4z3E2PbuAIJ4CSss6Fxs0HMSpnaxMMUFCdyVahAppg=",
+        "lastModified": 1740329432,
+        "narHash": "sha256-eKQ7aBkNvF5AhUpyJ1cW450jxomZ4gTIaYir5qsNl7Y=",
         "owner": "rust-lang",
         "repo": "rust-analyzer",
-        "rev": "8db40df2a3c1c3b18402c4844643d2fb6dce87d6",
+        "rev": "6d68c475c7aaf7534251182662456a4bf4216dfe",
         "type": "github"
       },
       "original": {