.\" generated with Ronn-NG/v0.10.1
.\" http://github.com/apjanke/ronn-ng/tree/0.10.1
.TH "BUNDLE\-DOCTOR" "1" "April 2026" ""
.SH "NAME"
\fBbundle\-doctor\fR \- Checks the bundle for common problems
.SH "SYNOPSIS"
\fBbundle doctor [diagnose]\fR [\-\-quiet] [\-\-gemfile=GEMFILE] [\-\-ssl]
.br
\fBbundle doctor ssl\fR [\-\-host=HOST] [\-\-tls\-version=TLS\-VERSION] [\-\-verify\-mode=VERIFY\-MODE]
.br
\fBbundle doctor\fR help [COMMAND]
.SH "DESCRIPTION"
You can diagnose common Bundler problems with this command such as checking gem environment or SSL/TLS issue\.
.SH "SUB\-COMMANDS"
.SS "diagnose (default command)"
Checks your Gemfile and gem environment for common problems\. If issues are detected, Bundler prints them and exits status 1\. Otherwise, Bundler prints a success message and exits status 0\.
.P
Examples of common problems caught include:
.IP "\(bu" 4
Invalid Bundler settings
.IP "\(bu" 4
Mismatched Ruby versions
.IP "\(bu" 4
Mismatched platforms
.IP "\(bu" 4
Uninstalled gems
.IP "\(bu" 4
Missing dependencies
.IP "" 0
.P
\fBOPTIONS\fR
.TP
\fB\-\-quiet\fR
Only output warnings and errors\.
.TP
\fB\-\-gemfile=GEMFILE\fR
The location of the Gemfile(5) which Bundler should use\. This defaults to a Gemfile(5) in the current working directory\. In general, Bundler will assume that the location of the Gemfile(5) is also the project's root and will try to find \fBGemfile\.lock\fR and \fBvendor/cache\fR relative to this location\.
.TP
\fB\-\-ssl\fR
Diagnose common SSL problems when connecting to https://rubygems\.org\.
.IP
This flag runs the \fBbundle doctor ssl\fR subcommand with default values underneath\.
.SS "ssl"
If you've experienced issues related to SSL certificates and/or TLS versions while connecting to https://rubygems\.org, this command can help troubleshoot common problems\. The diagnostic will perform a few checks such as:
.IP "\(bu" 4
Verify the Ruby OpenSSL version installed on your system\.
.IP "\(bu" 4
Check the OpenSSL library version used for compilation\.
.IP "\(bu" 4
Ensure CA certificates are correctly setup on your machine\.
.IP "\(bu" 4
Open a TLS connection and verify the outcome\.
.IP "" 0
.P
\fBOPTIONS\fR
.TP
\fB\-\-host=HOST\fR
Perform the diagnostic on HOST\. Defaults to \fBrubygems\.org\fR\.
.TP
\fB\-\-tls\-version=TLS\-VERSION\fR
Specify the TLS version when opening the connection to HOST\.
.IP
Accepted values are: \fB1\.1\fR or \fB1\.2\fR\.
.TP
\fB\-\-verify\-mode=VERIFY\-MODE\fR
Specify the TLS verify mode when opening the connection to HOST\. Defaults to \fBSSL_VERIFY_PEER\fR\.
.IP
Accepted values are: \fBCLIENT_ONCE\fR, \fBFAIL_IF_NO_PEER_CERT\fR, \fBNONE\fR, \fBPEER\fR\.