diff --git a/examples/dtls-wolfssl/Makefile.ci b/examples/dtls-wolfssl/Makefile.ci
index 1709b4b467..f60989871d 100644
--- a/examples/dtls-wolfssl/Makefile.ci
+++ b/examples/dtls-wolfssl/Makefile.ci
@@ -8,6 +8,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     cc2650-launchpad \
     cc2650stk \
     hifive1 \
+    hifive1b \
     i-nucleo-lrwan1 \
     im880b \
     maple-mini \
diff --git a/tests/pkg_wolfssl/Makefile.ci b/tests/pkg_wolfssl/Makefile.ci
index 91ed249852..94a0cf5c4d 100644
--- a/tests/pkg_wolfssl/Makefile.ci
+++ b/tests/pkg_wolfssl/Makefile.ci
@@ -2,6 +2,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     blackpill-stm32f103c8 \
     bluepill-stm32f103c8 \
     bluepill-stm32f030c8 \
+    hifive1b \
     i-nucleo-lrwan1 \
     nucleo-f030r8 \
     nucleo-f031k6 \