diff --git a/tests/meson.build b/tests/meson.build
index 68eb1f3..d9e9d96 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1,3 +1,5 @@
+cmake = import('cmake')
+
 gtest = dependency('gtest', main: true, disabler: true, required: false)
 gmock = dependency('gmock', disabler: true, required: false)
 if not gtest.found() or not gmock.found()
@@ -19,6 +21,23 @@
     endif
 endif
 
+nlohmann_json_dep = dependency(
+    'nlohmann_json',
+    required: false,
+    version: '>=3.11.2',
+    include_type: 'system',
+)
+if not nlohmann_json_dep.found()
+    nlohmann_proj = subproject('nlohmann_json', required: true)
+    nlohmann_json_dep = nlohmann_proj.get_variable('nlohmann_json_dep')
+endif
+
+valijson_dep = dependency('valijson', required: false)
+if not valijson_dep.found()
+    valijson_proj = cmake.subproject('valijson')
+    valijson_dep = valijson_proj.get_variable('valijson_dep')
+endif
+
 sources = ['ir-tests.cpp', 'test-utils.cpp', 'base64_test.cpp']
 
 test_include_dirs = ['.', '../include']
@@ -35,6 +54,8 @@
         json_c_dep,
         gtest,
         gmock,
+        nlohmann_json_dep,
+        valijson_dep
     ],
 )
 test('test-cper-tests', cper_tests)