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Home/ Questions/Q 7181239
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Editorial Team
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Editorial Team
Asked: May 28, 20262026-05-28T17:30:59+00:00 2026-05-28T17:30:59+00:00

Invalid gemspec in [/usr/lib/ruby/gems/1.8/specifications/activemodel-3.2.0.gemspec]: Illformed requirement [#<YAML::Syck::DefaultKey:0xb5f9c990> 3.2.0] From trying to do a sudo

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Invalid gemspec in [/usr/lib/ruby/gems/1.8/specifications/activemodel-3.2.0.gemspec]: Illformed requirement ["#<YAML::Syck::DefaultKey:0xb5f9c990> 3.2.0"]

From trying to do a sudo gem update for other issues

getting this hundreds of time as sudo gem update goes through each gem and gets the message for most of them

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  1. Editorial Team
    Editorial Team
    2026-05-28T17:31:00+00:00Added an answer on May 28, 2026 at 5:31 pm

    This can happen when upgrading to Rails 3.2.

    Updating Rubygems should fix this issue.

    gem update --system
    

    Hope this helps.

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