diff --git a/Gemfile.lock b/Gemfile.lock
index 3eaea72..1501e23 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,7 +23,7 @@ GEM
       thor (~> 0.19)
     coderay (1.1.2)
     colorator (1.1.0)
-    concurrent-ruby (1.1.4)
+    concurrent-ruby (1.1.5)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -51,8 +51,8 @@ GEM
       pathutil (~> 0.9)
       rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
-    jekyll-archives (2.1.1)
-      jekyll (>= 2.4)
+    jekyll-archives (2.2.1)
+      jekyll (>= 3.6, < 5.0)
     jekyll-assets (3.0.12)
       activesupport (~> 5.0)
       execjs (~> 2.7)
@@ -75,10 +75,10 @@ GEM
       sass (~> 3.4)
     jekyll-staging (1.0.6)
     jekyll-video-tag (0.1.0)
-    jekyll-watch (2.1.2)
+    jekyll-watch (2.2.1)
       listen (~> 3.0)
     kramdown (1.17.0)
-    liquid (4.0.1)
+    liquid (4.0.3)
     liquid-tag-parser (1.9.0)
       extras (~> 0.3)
       liquid (>= 3.0, < 5.0)
@@ -121,7 +121,7 @@ GEM
     redcarpet (3.4.0)
     rouge (3.3.0)
     ruby_dep (1.5.0)
-    safe_yaml (1.0.4)
+    safe_yaml (1.0.5)
     sass (3.7.3)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)