diff --git a/mac.mk b/mac.mk
index 7e99eb4..dcefba8 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=1.0.1r
+OPENSSLVERSION=1.0.1s
 CFLAGS="-mmacosx-version-min=10.6"
 
 all: usage mac
diff --git a/windows.mk b/windows.mk
index 9612f98..c69ab78 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=1.0.1r
+OPENSSLVERSION=1.0.1s
 
 all: usage 32bit 64bit