diff --git a/.dockerignore b/.dockerignore
index 67a0da0b2..1dabfdac2 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -104,6 +104,9 @@ dist
 # Stores VSCode versions used for testing VSCode extensions
 .vscode-test
 
+# yarn v1
+.yarnclean
+
 # yarn v2
 .yarn/cache
 .yarn/unplugged
diff --git a/.gitignore b/.gitignore
index 3f6c3a1b7..1f270e55b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -108,6 +108,9 @@ dist
 # Stores VSCode versions used for testing VSCode extensions
 .vscode-test
 
+# yarn v1
+.yarnclean
+
 # yarn v2
 .yarn/cache
 .yarn/unplugged
@@ -115,6 +118,9 @@ dist
 .yarn/install-state.gz
 .pnp.*
 
+# lock files
+yarn.lock
+
 # Test files
 test_resources/test_log*
 src/temp*/
diff --git a/.prettierignore b/.prettierignore
index af6bae242..d843ac3cb 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -108,6 +108,9 @@ dist
 # Stores VSCode versions used for testing VSCode extensions
 .vscode-test
 
+# yarn v1
+.yarnclean
+
 # yarn v2
 .yarn/cache
 .yarn/unplugged