diff --git a/Makefile b/Makefile
index 5040d2884..e6ce50cbd 100644
--- a/Makefile
+++ b/Makefile
@@ -10,6 +10,7 @@ makefiles = \
   src/libexpr/local.mk \
   src/libcmd/local.mk \
   src/nix/local.mk \
+  src/nlohmann/local.mk \
   src/resolve-system-dependencies/local.mk \
   scripts/local.mk \
   misc/bash/local.mk \
diff --git a/src/nlohmann/local.mk b/src/nlohmann/local.mk
new file mode 100644
index 000000000..63c427e00
--- /dev/null
+++ b/src/nlohmann/local.mk
@@ -0,0 +1,2 @@
+$(foreach i, $(wildcard src/nlohmann/*.hpp), \
+  $(eval $(call install-file-in, $(i), $(includedir)/nlohmann, 0644)))