diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fde6bbf..abdd40b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,7 +2,7 @@
 name: ci
 
 env:
-  R2V: 5.9.2
+  R2V: 5.9.4
 
 on:
   push:
diff --git a/meson.build b/meson.build
index 1e41040..93c00cb 100644
--- a/meson.build
+++ b/meson.build
@@ -60,9 +60,11 @@ r2yara_core_sources = [
   'src/core_r2yara.c'
 ]
 
+threads = dependency('threads')
+
 r2yara_core_plugin = library('core_r2yara',
   r2yara_core_sources,
-  dependencies: [r_core, libyara],
+  dependencies: [r_core, libyara, threads],
   include_directories: r2yara_incdirs,
   install: true,
   install_dir: r2_plugdir