diff --git a/build.zig b/build.zig
index a114609628..6f751404a6 100644
--- a/build.zig
+++ b/build.zig
@@ -155,11 +155,11 @@ pub fn build(b: *Builder) !void {
         const cmake_cfg = if (static_llvm) null else findAndParseConfigH(b, config_h_path_option);
 
         if (is_stage1) {
-            exe.addIncludeDir("src");
-            exe.addIncludeDir("deps/SoftFloat-3e/source/include");
+            exe.addIncludePath("src");
+            exe.addIncludePath("deps/SoftFloat-3e/source/include");
 
-            test_stage2.addIncludeDir("src");
-            test_stage2.addIncludeDir("deps/SoftFloat-3e/source/include");
+            test_stage2.addIncludePath("src");
+            test_stage2.addIncludePath("deps/SoftFloat-3e/source/include");
             // This is intentionally a dummy path. stage1.zig tries to @import("compiler_rt") in case
             // of being built by cmake. But when built by zig it's gonna get a compiler_rt so that
             // is pointless.
@@ -170,9 +170,9 @@ pub fn build(b: *Builder) !void {
             const softfloat = b.addStaticLibrary("softfloat", null);
             softfloat.setBuildMode(.ReleaseFast);
             softfloat.setTarget(target);
-            softfloat.addIncludeDir("deps/SoftFloat-3e-prebuilt");
-            softfloat.addIncludeDir("deps/SoftFloat-3e/source/8086");
-            softfloat.addIncludeDir("deps/SoftFloat-3e/source/include");
+            softfloat.addIncludePath("deps/SoftFloat-3e-prebuilt");
+            softfloat.addIncludePath("deps/SoftFloat-3e/source/8086");
+            softfloat.addIncludePath("deps/SoftFloat-3e/source/include");
             softfloat.addCSourceFiles(&softfloat_sources, &[_][]const u8{ "-std=c99", "-O3" });
             softfloat.single_threaded = single_threaded;
 
@@ -282,7 +282,7 @@ pub fn build(b: *Builder) !void {
         else
             &[_][]const u8{ "-DTRACY_ENABLE=1", "-fno-sanitize=undefined" };
 
-        exe.addIncludeDir(tracy_path);
+        exe.addIncludePath(tracy_path);
         exe.addCSourceFile(client_cpp, tracy_c_flags);
         if (!enable_llvm) {
             exe.linkSystemLibraryName("c++");
@@ -445,7 +445,7 @@ fn addCmakeCfgOptionsToExe(
         b.fmt("{s}{s}{s}", .{ exe.target.libPrefix(), "zigcpp", exe.target.staticLibSuffix() }),
     }) catch unreachable);
     assert(cfg.lld_include_dir.len != 0);
-    exe.addIncludeDir(cfg.lld_include_dir);
+    exe.addIncludePath(cfg.lld_include_dir);
     addCMakeLibraryList(exe, cfg.clang_libraries);
     addCMakeLibraryList(exe, cfg.lld_libraries);
     addCMakeLibraryList(exe, cfg.llvm_libraries);
@@ -546,9 +546,9 @@ fn addCxxKnownPath(
     if (need_cpp_includes) {
         // I used these temporarily for testing something but we obviously need a
         // more general purpose solution here.
-        //exe.addIncludeDir("/nix/store/fvf3qjqa5qpcjjkq37pb6ypnk1mzhf5h-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/../../../../include/c++/9.3.0");
-        //exe.addIncludeDir("/nix/store/fvf3qjqa5qpcjjkq37pb6ypnk1mzhf5h-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/../../../../include/c++/9.3.0/x86_64-unknown-linux-gnu");
-        //exe.addIncludeDir("/nix/store/fvf3qjqa5qpcjjkq37pb6ypnk1mzhf5h-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/../../../../include/c++/9.3.0/backward");
+        //exe.addIncludePath("/nix/store/fvf3qjqa5qpcjjkq37pb6ypnk1mzhf5h-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/../../../../include/c++/9.3.0");
+        //exe.addIncludePath("/nix/store/fvf3qjqa5qpcjjkq37pb6ypnk1mzhf5h-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/../../../../include/c++/9.3.0/x86_64-unknown-linux-gnu");
+        //exe.addIncludePath("/nix/store/fvf3qjqa5qpcjjkq37pb6ypnk1mzhf5h-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/../../../../include/c++/9.3.0/backward");
     }
 }
 
diff --git a/lib/std/build.zig b/lib/std/build.zig
index 24513c6b2e..395ccc5cb4 100644
--- a/lib/std/build.zig
+++ b/lib/std/build.zig
@@ -1949,14 +1949,14 @@ pub const LibExeObjStep = struct {
         while (it.next()) |tok| {
             if (mem.eql(u8, tok, "-I")) {
                 const dir = it.next() orelse return error.PkgConfigInvalidOutput;
-                self.addIncludeDir(dir);
+                self.addIncludePath(dir);
             } else if (mem.startsWith(u8, tok, "-I")) {
-                self.addIncludeDir(tok["-I".len..]);
+                self.addIncludePath(tok["-I".len..]);
             } else if (mem.eql(u8, tok, "-L")) {
                 const dir = it.next() orelse return error.PkgConfigInvalidOutput;
-                self.addLibPath(dir);
+                self.addLibraryPath(dir);
             } else if (mem.startsWith(u8, tok, "-L")) {
-                self.addLibPath(tok["-L".len..]);
+                self.addLibraryPath(tok["-L".len..]);
             } else if (mem.eql(u8, tok, "-l")) {
                 const lib = it.next() orelse return error.PkgConfigInvalidOutput;
                 self.linkSystemLibraryName(lib);
@@ -2116,15 +2116,30 @@ pub const LibExeObjStep = struct {
         self.linkLibraryOrObject(obj);
     }
 
+    /// TODO deprecated, use `addSystemIncludePath`.
     pub fn addSystemIncludeDir(self: *LibExeObjStep, path: []const u8) void {
+        self.addSystemIncludePath(path);
+    }
+
+    pub fn addSystemIncludePath(self: *LibExeObjStep, path: []const u8) void {
         self.include_dirs.append(IncludeDir{ .raw_path_system = self.builder.dupe(path) }) catch unreachable;
     }
 
+    /// TODO deprecated, use `addIncludePath`.
     pub fn addIncludeDir(self: *LibExeObjStep, path: []const u8) void {
+        self.addIncludePath(path);
+    }
+
+    pub fn addIncludePath(self: *LibExeObjStep, path: []const u8) void {
         self.include_dirs.append(IncludeDir{ .raw_path = self.builder.dupe(path) }) catch unreachable;
     }
 
+    /// TODO deprecated, use `addLibraryPath`.
     pub fn addLibPath(self: *LibExeObjStep, path: []const u8) void {
+        self.addLibraryPath(path);
+    }
+
+    pub fn addLibraryPath(self: *LibExeObjStep, path: []const u8) void {
         self.lib_paths.append(self.builder.dupe(path)) catch unreachable;
     }
 
@@ -2132,7 +2147,12 @@ pub const LibExeObjStep = struct {
         self.rpaths.append(self.builder.dupe(path)) catch unreachable;
     }
 
+    /// TODO deprecated, use `addFrameworkPath`.
     pub fn addFrameworkDir(self: *LibExeObjStep, dir_path: []const u8) void {
+        self.addFrameworkPath(dir_path);
+    }
+
+    pub fn addFrameworkPath(self: *LibExeObjStep, dir_path: []const u8) void {
         self.framework_dirs.append(self.builder.dupe(dir_path)) catch unreachable;
     }
 
diff --git a/test/standalone/issue_794/build.zig b/test/standalone/issue_794/build.zig
index 06c37a83a3..ece74f0e98 100644
--- a/test/standalone/issue_794/build.zig
+++ b/test/standalone/issue_794/build.zig
@@ -2,7 +2,7 @@ const Builder = @import("std").build.Builder;
 
 pub fn build(b: *Builder) void {
     const test_artifact = b.addTest("main.zig");
-    test_artifact.addIncludeDir("a_directory");
+    test_artifact.addIncludePath("a_directory");
 
     b.default_step.dependOn(&test_artifact.step);
 
diff --git a/test/standalone/issue_9812/build.zig b/test/standalone/issue_9812/build.zig
index de13ada8ec..677c589a84 100644
--- a/test/standalone/issue_9812/build.zig
+++ b/test/standalone/issue_9812/build.zig
@@ -8,7 +8,7 @@ pub fn build(b: *std.build.Builder) !void {
         "-std=c99",
         "-fno-sanitize=undefined",
     });
-    zip_add.addIncludeDir("vendor/kuba-zip");
+    zip_add.addIncludePath("vendor/kuba-zip");
     zip_add.linkLibC();
 
     const test_step = b.step("test", "Test it");
diff --git a/test/standalone/link_interdependent_static_c_libs/build.zig b/test/standalone/link_interdependent_static_c_libs/build.zig
index 1c361b2dc6..bd1b6100da 100644
--- a/test/standalone/link_interdependent_static_c_libs/build.zig
+++ b/test/standalone/link_interdependent_static_c_libs/build.zig
@@ -6,18 +6,18 @@ pub fn build(b: *Builder) void {
     const lib_a = b.addStaticLibrary("a", null);
     lib_a.addCSourceFile("a.c", &[_][]const u8{});
     lib_a.setBuildMode(mode);
-    lib_a.addIncludeDir(".");
+    lib_a.addIncludePath(".");
 
     const lib_b = b.addStaticLibrary("b", null);
     lib_b.addCSourceFile("b.c", &[_][]const u8{});
     lib_b.setBuildMode(mode);
-    lib_b.addIncludeDir(".");
+    lib_b.addIncludePath(".");
 
     const test_exe = b.addTest("main.zig");
     test_exe.setBuildMode(mode);
     test_exe.linkLibrary(lib_a);
     test_exe.linkLibrary(lib_b);
-    test_exe.addIncludeDir(".");
+    test_exe.addIncludePath(".");
 
     const test_step = b.step("test", "Test it");
     test_step.dependOn(&test_exe.step);
diff --git a/test/standalone/link_static_lib_as_system_lib/build.zig b/test/standalone/link_static_lib_as_system_lib/build.zig
index f951b68a8c..f39f3fac2a 100644
--- a/test/standalone/link_static_lib_as_system_lib/build.zig
+++ b/test/standalone/link_static_lib_as_system_lib/build.zig
@@ -7,15 +7,15 @@ pub fn build(b: *Builder) void {
     const lib_a = b.addStaticLibrary("a", null);
     lib_a.addCSourceFile("a.c", &[_][]const u8{});
     lib_a.setBuildMode(mode);
-    lib_a.addIncludeDir(".");
+    lib_a.addIncludePath(".");
     lib_a.install();
 
     const test_exe = b.addTest("main.zig");
     test_exe.setBuildMode(mode);
     test_exe.linkSystemLibrary("a"); // force linking liba.a as -la
-    test_exe.addSystemIncludeDir(".");
+    test_exe.addSystemIncludePath(".");
     const search_path = std.fs.path.join(b.allocator, &[_][]const u8{ b.install_path, "lib" }) catch unreachable;
-    test_exe.addLibPath(search_path);
+    test_exe.addLibraryPath(search_path);
 
     const test_step = b.step("test", "Test it");
     test_step.dependOn(b.getInstallStep());
diff --git a/test/standalone/objc/build.zig b/test/standalone/objc/build.zig
index 7fdec514e7..1b3a90f90f 100644
--- a/test/standalone/objc/build.zig
+++ b/test/standalone/objc/build.zig
@@ -19,7 +19,7 @@ pub fn build(b: *Builder) void {
 
     const exe = b.addExecutable("test", null);
     b.default_step.dependOn(&exe.step);
-    exe.addIncludeDir(".");
+    exe.addIncludePath(".");
     exe.addCSourceFile("Foo.m", &[0][]const u8{});
     exe.addCSourceFile("test.m", &[0][]const u8{});
     exe.setBuildMode(mode);
diff --git a/test/standalone/objcpp/build.zig b/test/standalone/objcpp/build.zig
index a38f7b4c9a..688592793a 100644
--- a/test/standalone/objcpp/build.zig
+++ b/test/standalone/objcpp/build.zig
@@ -19,7 +19,7 @@ pub fn build(b: *Builder) void {
 
     const exe = b.addExecutable("test", null);
     b.default_step.dependOn(&exe.step);
-    exe.addIncludeDir(".");
+    exe.addIncludePath(".");
     exe.addCSourceFile("Foo.mm", &[0][]const u8{});
     exe.addCSourceFile("test.mm", &[0][]const u8{});
     exe.setBuildMode(mode);
diff --git a/test/standalone/static_c_lib/build.zig b/test/standalone/static_c_lib/build.zig
index 2b604f5c0f..c64ae48dba 100644
--- a/test/standalone/static_c_lib/build.zig
+++ b/test/standalone/static_c_lib/build.zig
@@ -6,12 +6,12 @@ pub fn build(b: *Builder) void {
     const foo = b.addStaticLibrary("foo", null);
     foo.addCSourceFile("foo.c", &[_][]const u8{});
     foo.setBuildMode(mode);
-    foo.addIncludeDir(".");
+    foo.addIncludePath(".");
 
     const test_exe = b.addTest("foo.zig");
     test_exe.setBuildMode(mode);
     test_exe.linkLibrary(foo);
-    test_exe.addIncludeDir(".");
+    test_exe.addIncludePath(".");
 
     const test_step = b.step("test", "Test it");
     test_step.dependOn(&test_exe.step);
diff --git a/test/standalone/use_alias/build.zig b/test/standalone/use_alias/build.zig
index 5efc2b0a64..da4e8bef4b 100644
--- a/test/standalone/use_alias/build.zig
+++ b/test/standalone/use_alias/build.zig
@@ -3,7 +3,7 @@ const Builder = @import("std").build.Builder;
 pub fn build(b: *Builder) void {
     const main = b.addTest("main.zig");
     main.setBuildMode(b.standardReleaseOptions());
-    main.addIncludeDir(".");
+    main.addIncludePath(".");
 
     const test_step = b.step("test", "Test it");
     test_step.dependOn(&main.step);
diff --git a/test/tests.zig b/test/tests.zig
index f618adc1bf..70387b8d47 100644
--- a/test/tests.zig
+++ b/test/tests.zig
@@ -578,7 +578,7 @@ pub fn addPkgTests(
             these_tests.linkSystemLibrary("c");
         }
         these_tests.overrideZigLibDir("lib");
-        these_tests.addIncludeDir("test");
+        these_tests.addIncludePath("test");
 
         step.dependOn(&these_tests.step);
     }