diff --git a/modules/openapi-generator/src/main/resources/julia-server/api.mustache b/modules/openapi-generator/src/main/resources/julia-server/api.mustache
index c255a5a080c18..4741c181ded77 100644
--- a/modules/openapi-generator/src/main/resources/julia-server/api.mustache
+++ b/modules/openapi-generator/src/main/resources/julia-server/api.mustache
@@ -8,7 +8,7 @@ function {{operationId}}_read(handler)
         path_params = HTTP.getparams(req){{#pathParams}}
         openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"] = OpenAPI.Servers.to_param({{dataType}}, path_params, "{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", {{#required}}required=true, {{/required}}{{#isListContainer}}collection_format="{{collectionFormat}}", {{/isListContainer}}){{/pathParams}}{{/hasPathParams}}{{#hasQueryParams}}
         query_params = HTTP.queryparams(URIs.URI(req.target)){{#queryParams}}
-        openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"] = OpenAPI.Servers.to_param({{dataType}}, query_params, "{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", {{#required}}required=true, {{/required}}style="{{style}}", is_explode={{isExplode}}){{/queryParams}}{{/hasQueryParams}}{{#hasHeaderParams}}
+        openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"] = OpenAPI.Servers.to_param({{dataType}}, query_params, "{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", {{#required}}required=true, {{/required}}style="{{style}}", is_explode={{isExplode}}{{#isListContainer}},collection_format="{{collectionFormat}}"{{/isListContainer}}){{/queryParams}}{{/hasQueryParams}}{{#hasHeaderParams}}
         headers = Dict{String,String}(HTTP.headers(req)){{#headerParams}}
         openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"] = OpenAPI.Servers.to_param({{dataType}}, headers, "{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", {{#required}}required=true, {{/required}}{{#isListContainer}}collection_format="{{collectionFormat}}", {{/isListContainer}}){{/headerParams}}{{/hasHeaderParams}}{{#hasBodyParam}}{{#bodyParams}}
         openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"] = OpenAPI.Servers.to_param_type({{dataType}}, String(req.body)){{/bodyParams}}{{/hasBodyParam}}{{#hasFormParams}}
diff --git a/samples/client/petstore/julia/src/apis/api_PetApi.jl b/samples/client/petstore/julia/src/apis/api_PetApi.jl
index 49990a82e1de0..13126f05d1b46 100644
--- a/samples/client/petstore/julia/src/apis/api_PetApi.jl
+++ b/samples/client/petstore/julia/src/apis/api_PetApi.jl
@@ -82,7 +82,7 @@ const _returntypes_find_pets_by_status_PetApi = Dict{Regex,Type}(
 
 function _oacinternal_find_pets_by_status(_api::PetApi, status::Vector{String}; _mediaType=nothing)
     _ctx = OpenAPI.Clients.Ctx(_api.client, "GET", _returntypes_find_pets_by_status_PetApi, "/pet/findByStatus", ["petstore_auth", ])
-    OpenAPI.Clients.set_param(_ctx.query, "status", status)  # type Vector{String}
+    OpenAPI.Clients.set_param(_ctx.query, "status", status; style="form", is_explode=false)  # type Vector{String}
     OpenAPI.Clients.set_header_accept(_ctx, ["application/xml", "application/json", ])
     OpenAPI.Clients.set_header_content_type(_ctx, (_mediaType === nothing) ? [] : [_mediaType])
     return _ctx
@@ -114,7 +114,7 @@ const _returntypes_find_pets_by_tags_PetApi = Dict{Regex,Type}(
 
 function _oacinternal_find_pets_by_tags(_api::PetApi, tags::Vector{String}; _mediaType=nothing)
     _ctx = OpenAPI.Clients.Ctx(_api.client, "GET", _returntypes_find_pets_by_tags_PetApi, "/pet/findByTags", ["petstore_auth", ])
-    OpenAPI.Clients.set_param(_ctx.query, "tags", tags)  # type Vector{String}
+    OpenAPI.Clients.set_param(_ctx.query, "tags", tags; style="form", is_explode=false)  # type Vector{String}
     OpenAPI.Clients.set_header_accept(_ctx, ["application/xml", "application/json", ])
     OpenAPI.Clients.set_header_content_type(_ctx, (_mediaType === nothing) ? [] : [_mediaType])
     return _ctx
diff --git a/samples/client/petstore/julia/src/apis/api_UserApi.jl b/samples/client/petstore/julia/src/apis/api_UserApi.jl
index 63e0df193aeab..89ed37ed772ad 100644
--- a/samples/client/petstore/julia/src/apis/api_UserApi.jl
+++ b/samples/client/petstore/julia/src/apis/api_UserApi.jl
@@ -174,8 +174,8 @@ const _returntypes_login_user_UserApi = Dict{Regex,Type}(
 function _oacinternal_login_user(_api::UserApi, username::String, password::String; _mediaType=nothing)
 
     _ctx = OpenAPI.Clients.Ctx(_api.client, "GET", _returntypes_login_user_UserApi, "/user/login", [])
-    OpenAPI.Clients.set_param(_ctx.query, "username", username)  # type String
-    OpenAPI.Clients.set_param(_ctx.query, "password", password)  # type String
+    OpenAPI.Clients.set_param(_ctx.query, "username", username; style="form", is_explode=true)  # type String
+    OpenAPI.Clients.set_param(_ctx.query, "password", password; style="form", is_explode=true)  # type String
     OpenAPI.Clients.set_header_accept(_ctx, ["application/xml", "application/json", ])
     OpenAPI.Clients.set_header_content_type(_ctx, (_mediaType === nothing) ? [] : [_mediaType])
     return _ctx
diff --git a/samples/server/petstore/julia/src/apis/api_PetApi.jl b/samples/server/petstore/julia/src/apis/api_PetApi.jl
index 95dae56e137e1..f3e5d9315dd20 100644
--- a/samples/server/petstore/julia/src/apis/api_PetApi.jl
+++ b/samples/server/petstore/julia/src/apis/api_PetApi.jl
@@ -63,7 +63,7 @@ function find_pets_by_status_read(handler)
     function find_pets_by_status_read_handler(req::HTTP.Request)
         openapi_params = Dict{String,Any}()
         query_params = HTTP.queryparams(URIs.URI(req.target))
-        openapi_params["status"] = OpenAPI.Servers.to_param(Vector{String}, query_params, "status", required=true, )
+        openapi_params["status"] = OpenAPI.Servers.to_param(Vector{String}, query_params, "status", required=true, style="form", is_explode=false)
         req.context[:openapi_params] = openapi_params
 
         return handler(req)
@@ -91,7 +91,7 @@ function find_pets_by_tags_read(handler)
     function find_pets_by_tags_read_handler(req::HTTP.Request)
         openapi_params = Dict{String,Any}()
         query_params = HTTP.queryparams(URIs.URI(req.target))
-        openapi_params["tags"] = OpenAPI.Servers.to_param(Vector{String}, query_params, "tags", required=true, )
+        openapi_params["tags"] = OpenAPI.Servers.to_param(Vector{String}, query_params, "tags", required=true, style="form", is_explode=false)
         req.context[:openapi_params] = openapi_params
 
         return handler(req)
diff --git a/samples/server/petstore/julia/src/apis/api_UserApi.jl b/samples/server/petstore/julia/src/apis/api_UserApi.jl
index f8033b32330d6..5f2f35210ca0f 100644
--- a/samples/server/petstore/julia/src/apis/api_UserApi.jl
+++ b/samples/server/petstore/julia/src/apis/api_UserApi.jl
@@ -143,8 +143,8 @@ function login_user_read(handler)
     function login_user_read_handler(req::HTTP.Request)
         openapi_params = Dict{String,Any}()
         query_params = HTTP.queryparams(URIs.URI(req.target))
-        openapi_params["username"] = OpenAPI.Servers.to_param(String, query_params, "username", required=true, )
-        openapi_params["password"] = OpenAPI.Servers.to_param(String, query_params, "password", required=true, )
+        openapi_params["username"] = OpenAPI.Servers.to_param(String, query_params, "username", required=true, style="form", is_explode=true)
+        openapi_params["password"] = OpenAPI.Servers.to_param(String, query_params, "password", required=true, style="form", is_explode=true)
         req.context[:openapi_params] = openapi_params
 
         return handler(req)