diff --git a/mac.mk b/mac.mk
index a83865d..e77683c 100644
--- a/mac.mk
+++ b/mac.mk
@@ -26,7 +26,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 PACKAGE=yubico-piv-tool
-OPENSSLVERSION=1.0.2h
+OPENSSLVERSION=1.0.2k
 CFLAGS="-mmacosx-version-min=10.6"
 
 all: usage mac
diff --git a/windows.mk b/windows.mk
index f7b318f..7aba4a2 100644
--- a/windows.mk
+++ b/windows.mk
@@ -26,7 +26,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 PACKAGE=yubico-piv-tool
-OPENSSLVERSION=1.0.2h
+OPENSSLVERSION=1.0.2k
 
 all: usage 32bit 64bit