diff --git a/.drone.yml b/.drone.yml
index 6b55055..06c7465 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -32,4 +32,4 @@ steps:
   image: alpine
   depends_on:
     - default
-    - diagram
\ No newline at end of file
+    - diagram
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index 312b5db..212492c 100644
--- a/Dockerfile.alpine
+++ b/Dockerfile.alpine
@@ -13,6 +13,7 @@ RUN set -ex; \
       kpfonts \
       lastpage \
       latexmk \
+      twemojis \
     ;
 
 COPY src/usr /usr
diff --git a/Dockerfile.ubuntu b/Dockerfile.ubuntu
index 0079be1..4342634 100644
--- a/Dockerfile.ubuntu
+++ b/Dockerfile.ubuntu
@@ -14,6 +14,7 @@ RUN set -ex; \
       kpfonts \
       lastpage \
       latexmk \
+      twemojis \
     ;
 
 COPY src/usr /usr