diff --git a/package/mbedtls/mbedtls.hash b/package/mbedtls/mbedtls.hash
index 2281bd5fe5..6aa6d0235d 100644
--- a/package/mbedtls/mbedtls.hash
+++ b/package/mbedtls/mbedtls.hash
@@ -1,4 +1,4 @@
-# From https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.3:
-sha256  bdf7c5bbdc338da3edad89b2885d4f8668f9a6fffeba6ec17a60333e36dade6f  mbedtls-2.28.3.tar.gz
+# From https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.4:
+sha256  578c4dcd15bbff3f5cd56aa07cd4f850fc733634e3d5947be4f7157d5bfd81ac  mbedtls-2.28.4.tar.gz
 # Locally calculated
 sha256  cfc7749b96f63bd31c3c42b5c471bf756814053e847c10f3eb003417bc523d30  LICENSE
diff --git a/package/mbedtls/mbedtls.mk b/package/mbedtls/mbedtls.mk
index 8f09fd72a8..62eda6ec99 100644
--- a/package/mbedtls/mbedtls.mk
+++ b/package/mbedtls/mbedtls.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-MBEDTLS_VERSION = 2.28.3
+MBEDTLS_VERSION = 2.28.4
 MBEDTLS_SITE = $(call github,ARMmbed,mbedtls,v$(MBEDTLS_VERSION))
 MBEDTLS_CONF_OPTS = \
 	-DCMAKE_C_FLAGS="$(TARGET_CFLAGS) -std=c99" \