diff --git a/src/requirements/base.in b/src/requirements/base.in
index fe3ec8a7..81925795 100644
--- a/src/requirements/base.in
+++ b/src/requirements/base.in
@@ -32,6 +32,9 @@ fluentcms-privatenotes == 2.0
 fluentcms-teaser == 2.0
 fluentcms-twitterfeed == 1.0.3
 
+# missing from fluentcms-twitterfeed:
+future == 0.18.2
+
 # Support libs
 brotlipy >= 0.7.0
 django-admin-tools == 0.9.2
diff --git a/src/requirements/base.txt b/src/requirements/base.txt
index ab90674d..e96d3ad4 100644
--- a/src/requirements/base.txt
+++ b/src/requirements/base.txt
@@ -211,6 +211,8 @@ fluentcms-teaser==2.0
     # via -r requirements/base.in
 fluentcms-twitterfeed==1.0.3
     # via -r requirements/base.in
+future==0.18.2
+    # via -r requirements/base.in
 geographiclib==1.52
     # via geopy
 geopy==2.2.0