diff --git a/.drone.yml b/.drone.yml
index 598c941..a0ffef1 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -29,7 +29,7 @@ steps:
   - name: test
     image: 'node:22.7.0-slim'
     commands:
-      - yarn set version 4.4.0
+      - yarn set version 4.4.1
       - yarn install
       - yarn run jest
 
diff --git a/.tool-versions b/.tool-versions
index 5be4b1f..39d2b7d 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
 nodejs 22.8.0
-yarn 4.4.0
+yarn 1.22.22
diff --git a/Makefile b/Makefile
index 8865a21..f4882fb 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ asdf_install:
 
 .PHONY: yarn_setup
 yarn_setup:
-	@yarn set version 4.1.0
+	@yarn set version 4.4.1
 	@yarn init -2
 	@yarn add typescript jest @types/jest ts-node ts-jest