diff --git a/cyrus-imapd.spec b/cyrus-imapd.spec
index b0a9405..19d020c 100644
--- a/cyrus-imapd.spec
+++ b/cyrus-imapd.spec
@@ -8,10 +8,11 @@
 # Disabled because of https://bugzilla.redhat.com/show_bug.cgi?id=1643801
 # FIXME enable it back once double free issue is fixed
 %bcond_with cassandane
+#bcond_without cassandane
 
 Name: cyrus-imapd
 Version: 3.0.8
-Release: 3%{?dist}
+Release: 4%{?dist}
 
 %define ssl_pem_file /etc/pki/%name/%name.pem
 
@@ -45,6 +46,9 @@ Patch2: patch-cyrus-rename-quota
 # vzic uses an old makefile that needs hacks to use the proper flags
 Patch3: patch-vzic-proper-cflags
 
+# Allows building against clamav 0.101
+# https://github.com/cyrusimap/cyrus-imapd/issues/2621
+Patch4: patch-clamav101
 
 Source10: cyrus-imapd.logrotate
 Source11: cyrus-imapd.pam-config
@@ -83,8 +87,8 @@ Source91: patch-cassandane-no-syslog
 # Upstream ticket https://github.com/cyrusimap/cyrus-imapd/issues/1995
 Source92: patch-cassandane-fix-annotator
 
-BuildRequires: autoconf automake bison flex gcc gcc-c++ git groff libtool
-BuildRequires: pkgconfig systemd transfig
+BuildRequires: autoconf automake bison flex gcc gcc-c++ git glibc-langpack-en
+BuildRequires: groff libtool pkgconfig systemd transfig
 
 BuildRequires: perl-devel perl-generators perl(ExtUtils::MakeMaker)
 BuildRequires: perl(Pod::Html)
@@ -683,6 +687,10 @@ getent passwd cyrus >/dev/null || /usr/sbin/useradd -c "Cyrus IMAP Server" -d /v
 
 
 %changelog
+* Tue Jan 15 2019 Jason L Tibbitts III <tibbs@math.uh.edu> - 3.0.8-4
+- Allow building against ClamAV 0.101.
+- Add build dependency on glibc-langpack-en to slience some Perl complaints.
+
 * Thu Dec 13 2018 Pavel Zhukov <pzhukov@redhat.com> - 3.0.8-3
 - Temporary disable cassandane in master branch
 
diff --git a/patch-clamav101 b/patch-clamav101
new file mode 100644
index 0000000..48ede62
--- /dev/null
+++ b/patch-clamav101
@@ -0,0 +1,25 @@
+diff --git a/imap/cyr_virusscan.c b/imap/cyr_virusscan.c
+index 863a858..b6c8980 100644
+--- a/imap/cyr_virusscan.c
++++ b/imap/cyr_virusscan.c
+@@ -192,9 +192,19 @@ int clamav_scanfile(void *state, const char *fname,
+     struct clamav_state *st = (struct clamav_state *) state;
+     int r;
+ 
+-    /* scan file */
++#ifndef CL_SCAN_ARCHIVE /* clamav >= 0.101 */
++    struct cl_scan_options options;
++    memset(&options, 0, sizeof(struct cl_scan_options));
++    options.parse |= ~0; /* enable all parsers */
++    options.general |= CL_SCAN_GENERAL_HEURISTICS; /* enable heuristic alert options */
++
++    r = cl_scanfile(fname, virname, NULL, st->av_engine,
++                    &options);
++
++#else
+     r = cl_scanfile(fname, virname, NULL, st->av_engine,
+                     CL_SCAN_STDOPT);
++#endif
+ 
+     switch (r) {
+     case CL_CLEAN: