diff --git a/ale_linters/ruby/solargraph.vim b/ale_linters/ruby/solargraph.vim
index 7ca0399f..3b3eb9de 100644
--- a/ale_linters/ruby/solargraph.vim
+++ b/ale_linters/ruby/solargraph.vim
@@ -5,6 +5,7 @@
 " Description: updated to use stdio
 
 call ale#Set('ruby_solargraph_executable', 'solargraph')
+call ale#Set('ruby_solargraph_init_options', {})
 
 function! ale_linters#ruby#solargraph#GetCommand(buffer) abort
     return '%e' . ale#Pad('stdio')
@@ -17,4 +18,5 @@ call ale#linter#Define('ruby', {
 \   'executable_callback': ale#VarFunc('ruby_solargraph_executable'),
 \   'command_callback': 'ale_linters#ruby#solargraph#GetCommand',
 \   'project_root_callback': 'ale#ruby#FindProjectRoot',
+\   'initialization_options_callback': ale#VarFunc('ruby_solargraph_init_options'),
 \})
diff --git a/test/command_callback/test_ruby_solargraph.vader b/test/command_callback/test_ruby_solargraph.vader
index b39f686e..b530cd31 100644
--- a/test/command_callback/test_ruby_solargraph.vader
+++ b/test/command_callback/test_ruby_solargraph.vader
@@ -37,3 +37,8 @@ Execute(should set solargraph for ruby app3):
   AssertLSPLanguage 'ruby'
   AssertLSPOptions {}
   AssertLSPProject ale#path#Simplify(g:dir . 'command_callback/../ruby_fixtures/valid_ruby_app3')
+
+Execute(should accept initialization options):
+  AssertLSPOptions {}
+  let b:ale_ruby_solargraph_init_options = { 'diagnostics': 'true' }
+  AssertLSPOptions { 'diagnostics': 'true' }