diff --git a/flake.lock b/flake.lock
index 42977f3..f4e0bf9 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1680392223,
-        "narHash": "sha256-n3g7QFr85lDODKt250rkZj2IFS3i4/8HBU2yKHO3tqw=",
+        "lastModified": 1685662779,
+        "narHash": "sha256-cKDDciXGpMEjP1n6HlzKinN0H+oLmNpgeCTzYnsA2po=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "dcc36e45d054d7bb554c9cdab69093debd91a0b5",
+        "rev": "71fb97f0d875fd4de4994dfb849f2c75e17eb6c3",
         "type": "github"
       },
       "original": {
@@ -22,11 +22,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1681347147,
-        "narHash": "sha256-B+hTioRc3Jdf4SJyeCiO0fW5ShIznJk2OTiW2vOV+mc=",
+        "lastModified": 1686186815,
+        "narHash": "sha256-h6OTafX2eLgFQpu5yJf65JHDKrEVoMLLtTn8ksu1+qE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1a9d9175ecc48ecd033062fa09b1834d13ae9c69",
+        "rev": "5715d6b452b97d12c6f9077321d202a0cb50b8fc",
         "type": "github"
       },
       "original": {
diff --git a/src/meson.build b/src/meson.build
index ef01a7d..f8fb528 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -13,4 +13,4 @@ executable('nix-eval-jobs', src,
              threads_dep
            ],
            install: true,
-           cpp_args: ['-std=c++17', '-fvisibility=hidden'])
+           cpp_args: ['-std=c++2a', '-fvisibility=hidden'])
diff --git a/src/nix-eval-jobs.cc b/src/nix-eval-jobs.cc
index 62f14fe..2fce82c 100644
--- a/src/nix-eval-jobs.cc
+++ b/src/nix-eval-jobs.cc
@@ -84,11 +84,11 @@ struct MyArgs : MixEvalArgs, MixCommonArgs {
                  .labels = {"path"},
                  .handler = {&gcRootsDir}});
 
-        addFlag(
-            {.longName = "workers",
-             .description = "number of evaluate workers",
-             .labels = {"workers"},
-             .handler = {[=](std::string s) { nrWorkers = std::stoi(s); }}});
+        addFlag({.longName = "workers",
+                 .description = "number of evaluate workers",
+                 .labels = {"workers"},
+                 .handler = {
+                     [=, this](std::string s) { nrWorkers = std::stoi(s); }}});
 
         addFlag(
             {.longName = "max-memory-size",
@@ -96,7 +96,7 @@ struct MyArgs : MixEvalArgs, MixCommonArgs {
                  "maximum evaluation memory size (4GiB per worker by default)",
              .labels = {"size"},
              .handler = {
-                 [=](std::string s) { maxMemorySize = std::stoi(s); }}});
+                 [=, this](std::string s) { maxMemorySize = std::stoi(s); }}});
 
         addFlag({.longName = "flake",
                  .description = "build a flake",
@@ -140,7 +140,8 @@ static Value *releaseExprTopLevelValue(EvalState &state, Bindings &autoArgs) {
     Value vTop;
 
     if (myArgs.fromArgs) {
-        Expr *e = state.parseExprFromString(myArgs.releaseExpr, absPath("."));
+        Expr *e = state.parseExprFromString(
+            myArgs.releaseExpr, state.rootPath(CanonPath::fromCwd()));
         state.eval(e, vTop);
     } else {
         state.evalFile(lookupFileArg(state, myArgs.releaseExpr), vTop);
@@ -202,7 +203,7 @@ struct Drv {
         if (myArgs.meta) {
             nlohmann::json meta_;
             for (auto &metaName : drvInfo.queryMetaNames()) {
-                PathSet context;
+                NixStringContext context;
                 std::stringstream ss;
 
                 auto metaValue = drvInfo.queryMeta(metaName);