diff --git a/configure.ac b/configure.ac
index 957d231..5cc0c7e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -47,6 +47,11 @@ PKG_CHECK_MODULES(GTK, [$GTK_VERSION])
 AC_SUBST(GTK_CFLAGS)
 AC_SUBST(GTK_LIBS)
 
+AM_COND_IF([ENABLE_GTK2],
+    [PKG_CHECK_MODULES(LUNAR_CALENDAR, [lunar-calendar-2.0 >= 2.4.1])],
+    [PKG_CHECK_MODULES(LUNAR_CALENDAR, [lunar-calendar-3.0 >= 3.0.0])])
+AC_SUBST(LUNAR_CALENDAR_CFLAGS)
+AC_SUBST(LUNAR_CALENDAR_LIBS)
 
 # Checks for header files.
 AC_CHECK_HEADERS([iostream \
diff --git a/src/Calendar.cpp b/src/Calendar.cpp
index 285390a..c754d19 100644
--- a/src/Calendar.cpp
+++ b/src/Calendar.cpp
@@ -2,6 +2,7 @@
 #include <sys/time.h>
 
 #include <gtk/gtk.h>
+#include <lunar-calendar/lunar-calendar.h>
 
 #include "Calendar.hpp"
 #include "Config.hpp"
@@ -33,13 +34,13 @@ void dayDoubleClickCb(GtkCalendar *calendar, gpointer cls)
 
 Calendar::Calendar()
 {
-    widget = gtk_calendar_new();
+    widget = lunar_calendar_new();
 
     Config* config = Config::getInstance();
     g_object_set(widget,
                  "show-heading", true,
                  "show-day-names", true,
-                 "show-details", false,
+                 "show-details", true,
                  "show-week-numbers", config->show_week_numbers,
                  NULL);
     // Store today date to be able to jump to it.
diff --git a/src/Makefile.am b/src/Makefile.am
index fcf4357..7019835 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,5 +1,5 @@
-AM_CPPFLAGS = @GTK_CFLAGS@
-LIBS = @GTK_LIBS@
+AM_CPPFLAGS = @GTK_CFLAGS@ @LUNAR_CALENDAR_CFLAGS@
+LIBS = @GTK_LIBS@ @LUNAR_CALENDAR_LIBS@
 
 bin_PROGRAMS = gsimplecal
 gsimplecal_SOURCES = \