diff --git a/config/default.yaml b/config/default.yaml
index d59425365..bc0530d79 100644
--- a/config/default.yaml
+++ b/config/default.yaml
@@ -57,9 +57,9 @@ log:
 
 cache:
   previews:
-    size: 1 # Max number of previews you want to cache
+    size: 500 # Max number of previews you want to cache
   captions:
-    size: 1 # Max number of video captions/subtitles you want to cache
+    size: 500 # Max number of video captions/subtitles you want to cache
 
 admin:
   email: 'admin@example.com' # Your personal email as administrator
diff --git a/config/production.yaml.example b/config/production.yaml.example
index 98cdd7ca7..d347b0ece 100644
--- a/config/production.yaml.example
+++ b/config/production.yaml.example
@@ -71,7 +71,9 @@ log:
 
 cache:
   previews:
-    size: 100 # Max number of previews you want to cache
+    size: 500 # Max number of previews you want to cache
+  captions:
+    size: 500 # Max number of video captions/subtitles you want to cache
 
 admin:
   email: 'admin@example.com'
diff --git a/config/test.yaml b/config/test.yaml
index a4ee9a7b2..ffe736b24 100644
--- a/config/test.yaml
+++ b/config/test.yaml
@@ -21,6 +21,12 @@ smtp:
 log:
   level: 'debug'
 
+cache:
+  previews:
+    size: 1
+  captions:
+    size: 1
+
 signup:
   enabled: true