diff --git a/snap/local/snapcraft.yaml.erb b/snap/local/snapcraft.yaml.erb
index e8a5e40..e6f369f 100644
--- a/snap/local/snapcraft.yaml.erb
+++ b/snap/local/snapcraft.yaml.erb
@@ -1,6 +1,6 @@
 name: ruby
 version: '<%= v %>'
-base: core18
+base: core20
 summary: Interpreter for the Ruby programming language
 description: |
   Ruby is an interpreted object-oriented programming language often
@@ -52,10 +52,11 @@ parts:
     source: https://cache.ruby-lang.org/pub/ruby/snapshot.tar.gz
 <% end %>
     build-packages: [gcc, curl, autoconf, bison, libssl-dev, libyaml-dev, libreadline6-dev, zlib1g-dev, libncurses5-dev, libffi-dev, libdb-dev, libgdbm-dev]
-    stage-packages: [libgdbm5]
+    stage-packages: [libgdbm6]
     override-pull: |
       snapcraftctl pull
     override-build: |
+      export DEBIAN_DISABLE_RUBYGEMS_INTEGRATION=true # avoid error: /usr/lib/ruby/vendor_ruby/rubygems/defaults/operating_system.rb:50:in `<class:Specification>': undefined method `rubyforge_project=' for class `Gem::Specification' (NameError)
       ./configure --prefix=/ --enable-shared
       make
       make extract-gems
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index f58bc07..8c18f1c 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -1,6 +1,6 @@
 name: ruby
 version: '3.0.0'
-base: core18
+base: core20
 summary: Interpreter for the Ruby programming language
 description: |
   Ruby is an interpreted object-oriented programming language often
@@ -48,10 +48,11 @@ parts:
     source: https://cache.ruby-lang.org/pub/ruby/3.0/ruby-$SNAPCRAFT_PROJECT_VERSION.tar.gz
 
     build-packages: [gcc, curl, autoconf, bison, libssl-dev, libyaml-dev, libreadline6-dev, zlib1g-dev, libncurses5-dev, libffi-dev, libdb-dev, libgdbm-dev]
-    stage-packages: [libgdbm5]
+    stage-packages: [libgdbm6]
     override-pull: |
       snapcraftctl pull
     override-build: |
+      export DEBIAN_DISABLE_RUBYGEMS_INTEGRATION=true # avoid error: /usr/lib/ruby/vendor_ruby/rubygems/defaults/operating_system.rb:50:in `<class:Specification>': undefined method `rubyforge_project=' for class `Gem::Specification' (NameError)
       ./configure --prefix=/ --enable-shared
       make
       make extract-gems