diff --git a/lib/wolfssl b/lib/wolfssl
index f8176dd6..b40543b3 160000
--- a/lib/wolfssl
+++ b/lib/wolfssl
@@ -1 +1 @@
-Subproject commit f8176dd6464e0bbaa18a875c83e2db0c2cc3394d
+Subproject commit b40543b3421273f5ef1d1849bc44bf4931a92286
diff --git a/options.mk b/options.mk
index 95e7fc9c..2624e016 100644
--- a/options.mk
+++ b/options.mk
@@ -75,6 +75,7 @@ ifeq ($(SIGN),RSA4096)
     ./lib/wolfssl/wolfcrypt/src/hash.o \
     ./lib/wolfssl/wolfcrypt/src/wolfmath.o \
     ./lib/wolfssl/wolfcrypt/src/wc_port.o \
+    ./lib/wolfssl/wolfcrypt/src/tfm.o \
     ./src/xmalloc_rsa.o
   PUBLIC_KEY_OBJS=./src/rsa4096_pub_key.o
   CFLAGS+=-DWOLFBOOT_SIGN_RSA4096 -DXMALLOC_USER $(RSA_EXTRA_CFLAGS) \