diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## 0.2.0.2 - 2022-03-09
+
+### Added
+
+ - Nix 2.7 support
 
 ## 0.2.0.1 - 2022-03-07
 
diff --git a/hercules-ci-cnix-expr.cabal b/hercules-ci-cnix-expr.cabal
--- a/hercules-ci-cnix-expr.cabal
+++ b/hercules-ci-cnix-expr.cabal
@@ -1,7 +1,7 @@
 cabal-version: 2.4
 
 name:           hercules-ci-cnix-expr
-version:        0.2.0.1
+version:        0.2.0.2
 synopsis:       Bindings for the Nix evaluator
 category:       Nix, CI, Testing, DevOps
 homepage:       https://docs.hercules-ci.com
diff --git a/src/Hercules/CNix/Expr.hs b/src/Hercules/CNix/Expr.hs
--- a/src/Hercules/CNix/Expr.hs
+++ b/src/Hercules/CNix/Expr.hs
@@ -206,7 +206,7 @@
   (0 /=)
     <$> [C.throwBlock| int {
           if ($(Value *v) == NULL) { throw std::invalid_argument("forceValue value must be non-null"); }
-          $(EvalState *evalState)->forceValue(*$(Value *v));
+          $(EvalState *evalState)->forceValue(*$(Value *v), nix::noPos);
           return $(EvalState *evalState)->isDerivation(*$(Value *v));
         }|]
 
@@ -241,7 +241,7 @@
           if (iter == v->attrs->end()) {
             return 0;
           } else {
-            evalState.forceValue(*iter->value);
+            evalState.forceValue(*iter->value, nix::noPos);
             if (iter->value->type == ValueType::tBool) {
               return iter->value->boolean ? 1 : 0;
             } else {
@@ -296,8 +296,12 @@
       if (!drvInfo)
         throw EvalError("Not a valid derivation");
 
+#if NIX_IS_AT_LEAST(2,7,0)
+      StorePath storePath = drvInfo->requireDrvPath();
+#else
       std::string drvPath = drvInfo->queryDrvPath();
       StorePath storePath = parseStorePath(*state.store, drvPath);
+#endif
 
       // write it (?)
       auto drv = state.store->derivationFromPath(printPath23(*state.store, storePath));
diff --git a/src/Hercules/CNix/Expr/Raw.hs b/src/Hercules/CNix/Expr/Raw.hs
--- a/src/Hercules/CNix/Expr/Raw.hs
+++ b/src/Hercules/CNix/Expr/Raw.hs
@@ -140,5 +140,5 @@
     [C.catchBlock|  {
       Value *v = $(Value *v);
       if (v == NULL) throw std::invalid_argument("forceValue value must be non-null");
-      $(EvalState *evalState)->forceValue(*v);
+      $(EvalState *evalState)->forceValue(*v, nix::noPos);
     }|]