diff --git a/CHANGELOG.md b/CHANGELOG.md
index f11866a2..3ca08f88 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,11 @@ Airbrake Ruby Changelog
 
 ### master
 
+* Changed format for `[GEM_ROOT]` & `[PROJECT_ROOT]` placeholders to
+  `/GEM_ROOT` & `/PROJECT_ROOT` respectively. This improves searching
+  capabilities in the Airbrake
+  dashboard. ([#311](https://github.com/airbrake/airbrake-ruby/pull/311))
+
 ### [v2.8.3][v2.8.3] (March 12, 2018)
 
 * Fixed bug introduced in v2.8.2 in blacklist/whitelist filtering. All
diff --git a/lib/airbrake-ruby/filters/gem_root_filter.rb b/lib/airbrake-ruby/filters/gem_root_filter.rb
index 7de4e874..d9b54025 100644
--- a/lib/airbrake-ruby/filters/gem_root_filter.rb
+++ b/lib/airbrake-ruby/filters/gem_root_filter.rb
@@ -5,7 +5,7 @@ module Filters
     class GemRootFilter
       ##
       # @return [String]
-      GEM_ROOT_LABEL = '[GEM_ROOT]'.freeze
+      GEM_ROOT_LABEL = '/GEM_ROOT'.freeze
 
       ##
       # @return [Integer]
diff --git a/lib/airbrake-ruby/filters/root_directory_filter.rb b/lib/airbrake-ruby/filters/root_directory_filter.rb
index 6d1d158a..6444c356 100644
--- a/lib/airbrake-ruby/filters/root_directory_filter.rb
+++ b/lib/airbrake-ruby/filters/root_directory_filter.rb
@@ -5,7 +5,7 @@ module Filters
     class RootDirectoryFilter
       ##
       # @return [String]
-      PROJECT_ROOT_LABEL = '[PROJECT_ROOT]'.freeze
+      PROJECT_ROOT_LABEL = '/PROJECT_ROOT'.freeze
 
       ##
       # @return [Integer]
diff --git a/spec/airbrake_spec.rb b/spec/airbrake_spec.rb
index 418fa175..722c4182 100644
--- a/spec/airbrake_spec.rb
+++ b/spec/airbrake_spec.rb
@@ -81,8 +81,8 @@
           # rubocop:disable Metrics/LineLength
           expected_body = %r|
             {"errors":\[{"type":"RuntimeError","message":"bingo","backtrace":\[
-            {"file":"\[PROJECT_ROOT\]/spec/airbrake_spec.rb","line":\d+,"function":"[\w/\s\(\)<>]+","code".+},
-            {"file":"\[GEM_ROOT\]/gems/rspec-core-.+/.+","line":\d+,"function":"[\w/\s\(\)<>]+".+
+            {"file":"/PROJECT_ROOT/spec/airbrake_spec.rb","line":\d+,"function":"[\w/\s\(\)<>]+","code".+},
+            {"file":"/GEM_ROOT/gems/rspec-core-.+/.+","line":\d+,"function":"[\w/\s\(\)<>]+".+
           |x
           # rubocop:enable Metrics/LineLength
 
diff --git a/spec/filters/gem_root_filter_spec.rb b/spec/filters/gem_root_filter_spec.rb
index 356b7ad2..0f37872b 100644
--- a/spec/filters/gem_root_filter_spec.rb
+++ b/spec/filters/gem_root_filter_spec.rb
@@ -28,9 +28,9 @@
       eq(
         [
           { file: "/home/kyrylo/code/airbrake/ruby/spec/spec_helper.rb" },
-          { file: "[GEM_ROOT]/gems/rspec-core-3.3.2/lib/rspec/core/configuration.rb" },
+          { file: "/GEM_ROOT/gems/rspec-core-3.3.2/lib/rspec/core/configuration.rb" },
           { file: "/opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb" },
-          { file: "[GEM_ROOT]/gems/rspec-core-3.3.2/exe/rspec" }
+          { file: "/GEM_ROOT/gems/rspec-core-3.3.2/exe/rspec" }
         ]
       )
     )
diff --git a/spec/filters/root_directory_filter_spec.rb b/spec/filters/root_directory_filter_spec.rb
index a0c4f523..6345156f 100644
--- a/spec/filters/root_directory_filter_spec.rb
+++ b/spec/filters/root_directory_filter_spec.rb
@@ -26,9 +26,9 @@
       eq(
         [
           { file: "/home/kyrylo/code/airbrake/ruby/spec/spec_helper.rb" },
-          { file: "[PROJECT_ROOT]/gems/rspec-core-3.3.2/lib/rspec/core/configuration.rb " },
+          { file: "/PROJECT_ROOT/gems/rspec-core-3.3.2/lib/rspec/core/configuration.rb " },
           { file: "/opt/rubies/ruby-2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb" },
-          { file: "[PROJECT_ROOT]/gems/rspec-core-3.3.2/exe/rspec" }
+          { file: "/PROJECT_ROOT/gems/rspec-core-3.3.2/exe/rspec" }
         ]
       )
     )
diff --git a/spec/notifier_spec/options_spec.rb b/spec/notifier_spec/options_spec.rb
index 2a1bbd5d..36fc4c34 100644
--- a/spec/notifier_spec/options_spec.rb
+++ b/spec/notifier_spec/options_spec.rb
@@ -75,7 +75,7 @@ def expect_a_request_with_body(body)
 
         expect(
           a_request(:post, endpoint).
-          with(body: %r|{"file":"\[PROJECT_ROOT\]/airbrake/ruby/spec/airbrake_spec.+|)
+          with(body: %r|{"file":"/PROJECT_ROOT/airbrake/ruby/spec/airbrake_spec.+|)
         ).to have_been_made.once
       end