diff --git a/third_party/mbedtls/Makefile.am b/third_party/mbedtls/Makefile.am
index 37a657028..aa569a8b3 100644
--- a/third_party/mbedtls/Makefile.am
+++ b/third_party/mbedtls/Makefile.am
@@ -50,8 +50,8 @@ libmbedcrypto_a_SOURCES                       = \
 
 if OPENTHREAD_EXAMPLES_EFR32
 nodist_libmbedcrypto_a_SOURCES                = \
-    @top_builddir@/third_party/silabs/gecko_sdk_suite/v2.0/util/third_party/mbedtls/sl_crypto/src/crypto_aes.c \
-    @top_builddir@/third_party/silabs/gecko_sdk_suite/v2.0/util/third_party/mbedtls/sl_crypto/src/crypto_management.c \
+    @top_builddir@/third_party/silabs/gecko_sdk_suite/v2.2/util/third_party/mbedtls/sl_crypto/src/crypto_aes.c \
+    @top_builddir@/third_party/silabs/gecko_sdk_suite/v2.2/util/third_party/mbedtls/sl_crypto/src/crypto_management.c \
     $(NULL)
 else
 libmbedcrypto_a_SOURCES                      += \
@@ -90,8 +90,8 @@ libmbedcrypto_a_SOURCES                      += \
 
 if OPENTHREAD_EXAMPLES_EFR32
 nodist_libmbedcrypto_a_SOURCES               += \
-    @top_builddir@/third_party/silabs/gecko_sdk_suite/v2.0/util/third_party/mbedtls/library/ecp.c \
-    @top_builddir@/third_party/silabs/gecko_sdk_suite/v2.0/util/third_party/mbedtls/sl_crypto/src/crypto_ecp.c \
+    @top_builddir@/third_party/silabs/gecko_sdk_suite/v2.2/util/third_party/mbedtls/library/ecp.c \
+    @top_builddir@/third_party/silabs/gecko_sdk_suite/v2.2/util/third_party/mbedtls/sl_crypto/src/crypto_ecp.c \
     $(NULL)
 else
 libmbedcrypto_a_SOURCES                      += \