diff --git a/CHANGELOG.md b/CHANGELOG.md
index a944ad05b..f7a6f68f6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,9 @@
 - [DOCS]: Documentation changes. No changes to the library's behavior.
 - [SECURITY]: A change which fixes a security vulnerability.
 
+## [Unreleased]
+- [COMPAT] [https://github.com/patterns-ai-core/langchainrb/pull/980] Suppress a Ruby 3.4 warning for URI parser.
+
 ## [0.19.5]
 - [BREAKING] [https://github.com/patterns-ai-core/langchainrb/pull/859] Add metadata support to PgVector storage
 - [BUGFIX] [https://github.com/patterns-ai-core/langchainrb/pull/939] Fix Langchain::Vectorsearch::Milvus initializer by passing :api_key
diff --git a/lib/langchain/assistant/messages/ollama_message.rb b/lib/langchain/assistant/messages/ollama_message.rb
index d660ff802..d2067dc31 100644
--- a/lib/langchain/assistant/messages/ollama_message.rb
+++ b/lib/langchain/assistant/messages/ollama_message.rb
@@ -24,7 +24,10 @@ class OllamaMessage < Base
         def initialize(role:, content: nil, image_url: nil, tool_calls: [], tool_call_id: nil)
           raise ArgumentError, "Role must be one of #{ROLES.join(", ")}" unless ROLES.include?(role)
           raise ArgumentError, "Tool calls must be an array of hashes" unless tool_calls.is_a?(Array) && tool_calls.all? { |tool_call| tool_call.is_a?(Hash) }
-          raise ArgumentError, "image_url must be a valid url" if image_url && !URI::DEFAULT_PARSER.make_regexp.match?(image_url)
+
+          # Ensure compatibility with `URI::RFC2396_PARSER` (Ruby 3.4+) and `URI::DEFAULT_PARSER` (<= 3.3).
+          uri_parser = defined?(URI::RFC2396_PARSER) ? URI::RFC2396_PARSER : URI::DEFAULT_PARSER
+          raise ArgumentError, "image_url must be a valid url" if image_url && !uri_parser.make_regexp.match?(image_url)
 
           @role = role
           # Some Tools return content as a JSON hence `.to_s`
diff --git a/lib/langchain/loader.rb b/lib/langchain/loader.rb
index 94953a7fb..632f6d16e 100644
--- a/lib/langchain/loader.rb
+++ b/lib/langchain/loader.rb
@@ -91,7 +91,11 @@ def load(&block)
 
     def load_from_url
       unescaped_url = URI.decode_www_form_component(@path)
-      escaped_url = URI::DEFAULT_PARSER.escape(unescaped_url)
+
+      # Ensure compatibility with `URI::RFC2396_PARSER` (Ruby 3.4+) and `URI::DEFAULT_PARSER` (<= 3.3).
+      uri_parser = defined?(URI::RFC2396_PARSER) ? URI::RFC2396_PARSER : URI::DEFAULT_PARSER
+      escaped_url = uri_parser.escape(unescaped_url)
+
       URI.parse(escaped_url).open
     end
 
diff --git a/lib/langchain/processors/eml.rb b/lib/langchain/processors/eml.rb
index 3160e9beb..eb47f7bec 100644
--- a/lib/langchain/processors/eml.rb
+++ b/lib/langchain/processors/eml.rb
@@ -52,9 +52,12 @@ def extract_text_content(mail)
 
       # Clean and format the extracted content
       def clean_content(content)
+        # Ensure compatibility with `URI::RFC2396_PARSER` (Ruby 3.4+) and `URI::DEFAULT_PARSER` (<= 3.3).
+        uri_parser = defined?(URI::RFC2396_PARSER) ? URI::RFC2396_PARSER : URI::DEFAULT_PARSER
+
         content
           .gsub(/\[cid:[^\]]+\]/, "") # Remove embedded image references
-          .gsub(URI::DEFAULT_PARSER.make_regexp(%w[http https])) { |match| "<#{match}>" } # Format URLs
+          .gsub(uri_parser.make_regexp(%w[http https])) { |match| "<#{match}>" } # Format URLs
           .gsub(/\r\n?/, "\n") # Normalize line endings to Unix style
           .gsub(/[\u200B-\u200D\uFEFF]/, "") # Remove zero width spaces and similar characters
           .gsub(/<\/?[^>]+>/, "") # Remove any HTML tags that might have sneaked in