diff --git a/src/libcrun/error.c b/src/libcrun/error.c
index be726c4733..812ece8b82 100644
--- a/src/libcrun/error.c
+++ b/src/libcrun/error.c
@@ -163,7 +163,7 @@ get_timestamp (timestamp_t *timestamp, const char *suffix)
   gettimeofday (&tv, NULL);
   gmtime_r (&tv.tv_sec, &now);
   strftime ((char *) timestamp, 64, "%Y-%m-%dT%H:%M:%S", &now);
-  sprintf (((char *) timestamp) + 19, ".%06ldZ%.8s", tv.tv_usec, suffix);
+  sprintf (((char *) timestamp) + 19, ".%06lldZ%.8s", (long long int) tv.tv_usec, suffix);
 }
 
 static void *
diff --git a/src/libcrun/utils.c b/src/libcrun/utils.c
index c1eb4edfeb..884f71e615 100644
--- a/src/libcrun/utils.c
+++ b/src/libcrun/utils.c
@@ -1811,7 +1811,7 @@ get_current_timestamp (char *out, size_t len)
   gmtime_r (&tv.tv_sec, &now);
   strftime (timestamp, sizeof (timestamp), "%Y-%m-%dT%H:%M:%S", &now);
 
-  snprintf (out, len, "%s.%06ldZ", timestamp, tv.tv_usec);
+  snprintf (out, len, "%s.%06lldZ", timestamp, (long long int) tv.tv_usec);
   out[len - 1] = '\0';
 }
 
diff --git a/tests/podman/Dockerfile b/tests/podman/Dockerfile
index cf5b9f5c40..154ec5eefc 100644
--- a/tests/podman/Dockerfile
+++ b/tests/podman/Dockerfile
@@ -5,7 +5,7 @@ ENV PATH=/usr/bin:/usr/sbin:/root/go/bin:/usr/local/bin::/usr/local/sbin
 
 RUN dnf install -y golang python git gcc automake autoconf libcap-devel \
     systemd-devel yajl-devel libseccomp-devel go-md2man  \
-    glibc-static python3-libmount libtool make podman xz nmap-ncat procps-ng \
+    glibc-static python3-libmount libtool make podman xz nmap-ncat procps-ng slirp4netns \
     device-mapper-devel containernetworking-plugins 'dnf-command(builddep)' && \
     dnf builddep -y podman && \
     chmod 755 /root && \