diff --git a/openlane/digitalcore_macro/base.sdc b/openlane/digitalcore_macro/base.sdc
index d61ee72..2a03990 100644
--- a/openlane/digitalcore_macro/base.sdc
+++ b/openlane/digitalcore_macro/base.sdc
@@ -15,7 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-set ::env(WB_CLOCK_PERIOD)    "10"
+set ::env(WB_CLOCK_PERIOD)    "20"
 set ::env(WB_CLOCK_PORT)      "wb_clk_i"
 
 set ::env(RING0_CLOCK_PERIOD) "5"