diff --git a/CHANGELOG.md b/CHANGELOG.md
index 359779c52..fb86a4cd8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ## 0.50.1
 - Resolve self in yieldself tags
+- Include absolute paths in config (#674)
 
 ## 0.50.0 - December 5, 2023
 - Remove .travis.yml as its not longer used (#627)
diff --git a/lib/solargraph/version.rb b/lib/solargraph/version.rb
index 8af0f0496..62310a71c 100755
--- a/lib/solargraph/version.rb
+++ b/lib/solargraph/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Solargraph
-  VERSION = '0.50.0'
+  VERSION = '0.50.1'
 end
diff --git a/lib/solargraph/workspace/config.rb b/lib/solargraph/workspace/config.rb
index effa6bdd7..0e66c585f 100644
--- a/lib/solargraph/workspace/config.rb
+++ b/lib/solargraph/workspace/config.rb
@@ -19,7 +19,7 @@ class Config
 
       # @param directory [String]
       def initialize directory = ''
-        @directory = directory
+        @directory = File.absolute_path(directory)
         @raw_data = config_data
         included
         excluded
@@ -42,7 +42,8 @@ def excluded
       end
 
       def allow? filename
-        filename.start_with?(directory) && 
+        filename = File.absolute_path(filename, directory)
+        filename.start_with?(directory) &&
           !excluded.include?(filename) &&
           excluded_directories.none? { |d| filename.start_with?(d) }
       end
@@ -171,7 +172,7 @@ def default_config
       # @return [Array<String>]
       def process_globs globs
         result = globs.flat_map do |glob|
-          Dir[File.join directory, glob]
+          Dir[File.absolute_path(glob, directory)]
             .map{ |f| f.gsub(/\\/, '/') }
             .select { |f| File.file?(f) }
         end
@@ -186,7 +187,7 @@ def process_globs globs
       def process_exclusions globs
         remainder = globs.select do |glob|
           if glob_is_directory?(glob)
-            exdir = File.join(directory, glob_to_directory(glob))
+            exdir = File.absolute_path(glob_to_directory(glob), directory)
             included.delete_if { |file| file.start_with?(exdir) }
             false
           else
@@ -224,7 +225,7 @@ def glob_to_directory glob
       def excluded_directories
         @raw_data['exclude']
           .select { |g| glob_is_directory?(g) }
-          .map { |g| File.join(directory, glob_to_directory(g)) }
+          .map { |g| File.absolute_path(glob_to_directory(g), directory) }
       end
     end
   end
diff --git a/solargraph-0.50.0.gem b/solargraph-0.50.0.gem
new file mode 100644
index 000000000..8c8f42ee9
Binary files /dev/null and b/solargraph-0.50.0.gem differ
diff --git a/spec/api_map_spec.rb b/spec/api_map_spec.rb
index 0ec80db9f..49d8a1aed 100755
--- a/spec/api_map_spec.rb
+++ b/spec/api_map_spec.rb
@@ -432,7 +432,7 @@ class Sup
 
   it "loads workspaces from directories" do
     api_map = Solargraph::ApiMap.load('spec/fixtures/workspace')
-    expect(api_map.source_map('spec/fixtures/workspace/app.rb')).to be_a(Solargraph::SourceMap)
+    expect(api_map.source_map(File.absolute_path('spec/fixtures/workspace/app.rb'))).to be_a(Solargraph::SourceMap)
   end
 
   it "finds constants from included modules" do
diff --git a/spec/language_server/message/text_document/definition_spec.rb b/spec/language_server/message/text_document/definition_spec.rb
index a12b9d138..72ff77f1e 100644
--- a/spec/language_server/message/text_document/definition_spec.rb
+++ b/spec/language_server/message/text_document/definition_spec.rb
@@ -4,10 +4,12 @@
     host.prepare('spec/fixtures/workspace')
     sleep 0.1 until host.libraries.all?(&:mapped?)
     host.catalog
+    file_uri = Solargraph::LanguageServer::UriHelpers.file_to_uri(File.absolute_path('spec/fixtures/workspace/lib/other.rb'))
+    other_uri = Solargraph::LanguageServer::UriHelpers.file_to_uri(File.absolute_path('spec/fixtures/workspace/lib/thing.rb'))
     message = Solargraph::LanguageServer::Message::TextDocument::Definition.new(host, {
       'params' => {
         'textDocument' => {
-          'uri' => 'file://spec/fixtures/workspace/lib/other.rb'
+          'uri' => file_uri
         },
         'position' => {
           'line' => 4,
@@ -16,7 +18,7 @@
       }
     })
     message.process
-    expect(message.result.first[:uri]).to eq('file://spec/fixtures/workspace/lib/thing.rb')
+    expect(message.result.first[:uri]).to eq(other_uri)
   end
 
   it 'finds definitions of require paths' do