diff --git a/libical/.signature b/libical/.signature
index ff9c1383a..b1739bce3 100644
--- a/libical/.signature
+++ b/libical/.signature
@@ -1,5 +1,6 @@
 untrusted comment: verify with /etc/ports/contrib.pub
-RWSagIOpLGJF37TCKt5mm8RG4/oAtBAx3sCjho8I4vRYO+u7Bz7PrS8qREUAWF9ASpKhHF/ReyP/3g6YEyHRSZQz75uHy5iNuA8=
-SHA256 (Pkgfile) = b3ed625ce92dd1e014899970ca918d4d86d3e37b8c44d38d2f02a561dece81e2
+RWSagIOpLGJF3+tXgf3w646zmGUuoXpn6n8exLkmwkbqponyq7gQTczbgyycMm7kwER1DlglrR/Hl6KgYUblK97C4oPu8ys9fwM=
+SHA256 (Pkgfile) = 37fa3fbd138a1b9bc65f240b77faf92207dda9ff20e17bc688c53ad9b7953530
 SHA256 (.footprint) = d1a385335cc807f8b066454c2c7e35faf99ecbe880937899e2b44985bcf091c3
 SHA256 (libical-3.0.8.tar.gz) = 09fecacaf75ba5a242159e3a9758a5446b5ce4d0ab684f98a7040864e1d1286f
+SHA256 (icu-68.1.patch) = 35baa04a18b66441ecc5a67e674e11c020e596e124f57cbf94a69595c4ca581c
diff --git a/libical/Pkgfile b/libical/Pkgfile
index 8af16147c..c56348016 100644
--- a/libical/Pkgfile
+++ b/libical/Pkgfile
@@ -6,9 +6,14 @@
 name=libical
 version=3.0.8
 release=1
-source=(https://github.com/libical/libical/archive/v$version/$name-$version.tar.gz)
+source=(https://github.com/libical/libical/archive/v$version/$name-$version.tar.gz
+  # https://github.com/libical/libical/commit/a3308a23912bba2db654a8c456165c31888cc897
+  # i removed the ReleaseNotes.txt as it failed to apply on the tagged ball
+  icu-68.1.patch)
 
 build() {
+  [ $(pkginfo -i | awk '/^icu / {split($2,a,"."); print a[1]}') -ge 68 ] && \
+    patch -p1 -d $name-$version -i $SRC/icu-68.1.patch
   cmake -S $name-$version -B build -G Ninja \
     -D CMAKE_INSTALL_PREFIX=/usr \
     -D CMAKE_INSTALL_LIBDIR=lib \
diff --git a/libical/icu-68.1.patch b/libical/icu-68.1.patch
new file mode 100644
index 000000000..f17ca0cd5
--- /dev/null
+++ b/libical/icu-68.1.patch
@@ -0,0 +1,78 @@
+From a3308a23912bba2db654a8c456165c31888cc897 Mon Sep 17 00:00:00 2001
+From: Allen Winter <allen.winter@kdab.com>
+Date: Sat, 31 Oct 2020 17:38:01 -0400
+Subject: [PATCH] Fix build with icu-68.1
+
+Use stdbool.h to define true and false when possible
+
+Issue#448
+---
+ ConfigureChecks.cmake   |  1 +
+ config.h.cmake          |  3 +++
+ src/libical/icalrecur.c | 10 ++++++++--
+ 4 files changed, 13 insertions(+), 2 deletions(-)
+
+diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
+index e4d0e2ec..bba33fa9 100644
+--- a/ConfigureChecks.cmake
++++ b/ConfigureChecks.cmake
+@@ -10,6 +10,7 @@ check_include_files(sys/utsname.h HAVE_SYS_UTSNAME_H)
+ check_include_files(fcntl.h HAVE_FCNTL_H)
+ check_include_files(unistd.h HAVE_UNISTD_H)
+ check_include_files(wctype.h HAVE_WCTYPE_H)
++check_include_files(stdbool.h HAVE_STDBOOL_H)
+ 
+ include(CheckFunctionExists)
+ if(WIN32 AND MSVC)
+ 
+ Version 3.0.8 (07 March 2020):
+ ------------------------------
+diff --git a/config.h.cmake b/config.h.cmake
+index 8fd3421b..c8008692 100644
+--- a/config.h.cmake
++++ b/config.h.cmake
+@@ -39,6 +39,9 @@
+ /* Define to 1 if you have the <dirent.h> header file. */
+ #cmakedefine HAVE_DIRENT_H 1
+ 
++/* Define to 1 if you have the <stdbool.h> header file. */
++#cmakedefine HAVE_STDBOOL_H 1
++
+ /* Define if we have pthread. */
+ #cmakedefine HAVE_PTHREAD_ATTR_GET_NP 1
+ #cmakedefine HAVE_PTHREAD_GETATTR_NP 1
+diff --git a/src/libical/icalrecur.c b/src/libical/icalrecur.c
+index 38ee2bb3..64ec9732 100644
+--- a/src/libical/icalrecur.c
++++ b/src/libical/icalrecur.c
+@@ -145,6 +145,12 @@
+ #if defined(HAVE_LIBICU)
+ #include <unicode/ucal.h>
+ #include <unicode/ustring.h>
++#if defined(HAVE_STDBOOL_H)
++#include <stdbool.h>
++#else
++#define false 0
++#define true 1
++#endif
+ #define RSCALE_IS_SUPPORTED 1
+ #else
+ #define RSCALE_IS_SUPPORTED 0
+@@ -1018,7 +1024,7 @@ icalarray *icalrecurrencetype_rscale_supported_calendars(void)
+ 
+     calendars = icalarray_new(sizeof(const char **), 20);
+ 
+-    en = ucal_getKeywordValuesForLocale("calendar", NULL, FALSE, &status);
++    en = ucal_getKeywordValuesForLocale("calendar", NULL, false, &status);
+     while ((cal = uenum_next(en, NULL, &status))) {
+         cal = icalmemory_tmp_copy(cal);
+         icalarray_append(calendars, &cal);
+@@ -1411,7 +1417,7 @@ static int initialize_rscale(icalrecur_iterator *impl)
+         }
+ 
+         /* Check if specified calendar is supported */
+-        en = ucal_getKeywordValuesForLocale("calendar", NULL, FALSE, &status);
++        en = ucal_getKeywordValuesForLocale("calendar", NULL, false, &status);
+         while ((cal = uenum_next(en, NULL, &status))) {
+             if (!strcmp(cal, rule.rscale)) {
+                 is_hebrew = !strcmp(rule.rscale, "hebrew");