diff --git a/.mbedignore b/.mbedignore
new file mode 100644
index 00000000..61f23a56
--- /dev/null
+++ b/.mbedignore
@@ -0,0 +1,5 @@
+.github/
+examples/
+scripts/
+test/
+third-party/
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e4b15ba0..4a8c8d59 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ HEAD
 ----
 
 * Fixed `-Wparentheses` warning introduced in v5.6.5 (PR #335 by @nuket)
+* Added `.mbedignore` for ARM mbdeb (PR #334 by @nuket)
 
 v5.6.5
 ------