diff --git a/opentelemetry-etw-logs/src/exporter/options.rs b/opentelemetry-etw-logs/src/exporter/options.rs
index 55d5f0d9f..85ef5f915 100644
--- a/opentelemetry-etw-logs/src/exporter/options.rs
+++ b/opentelemetry-etw-logs/src/exporter/options.rs
@@ -65,7 +65,7 @@ impl std::fmt::Debug for dyn EventNameCallback {
     }
 }
 
-fn validate_etw_event_name(event_name: &str) -> Result<(), Box<dyn Error>> {
+fn validate_etw_event_name(event_name: &str) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
     if event_name.is_empty() {
         return Err("Event name cannot be empty.".into());
     }
diff --git a/opentelemetry-etw-logs/src/processor.rs b/opentelemetry-etw-logs/src/processor.rs
index 1311ef351..4935985d3 100644
--- a/opentelemetry-etw-logs/src/processor.rs
+++ b/opentelemetry-etw-logs/src/processor.rs
@@ -154,13 +154,13 @@ impl ProcessorBuilder {
     }
 
     /// Builds the processor with given options, returning `Error` if it fails.
-    pub fn build(self) -> Result<Processor, Box<dyn Error>> {
+    pub fn build(self) -> Result<Processor, Box<dyn Error + Send + Sync + 'static>> {
         self.validate()?;
 
         Ok(Processor::new(self.options))
     }
 
-    fn validate(&self) -> Result<(), Box<dyn Error>> {
+    fn validate(&self) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
         validate_provider_name(self.options.provider_name(), self.provider_name_compat_mode)?;
         Ok(())
     }
@@ -169,7 +169,7 @@ impl ProcessorBuilder {
 fn validate_provider_name(
     provider_name: &str,
     compat_mode: ProviderNameCompatMode,
-) -> Result<(), Box<dyn Error>> {
+) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
     if provider_name.is_empty() {
         return Err("Provider name must not be empty.".into());
     }
diff --git a/opentelemetry-user-events-logs/src/logs/processor.rs b/opentelemetry-user-events-logs/src/logs/processor.rs
index 5d53ee903..c3a3c0a82 100644
--- a/opentelemetry-user-events-logs/src/logs/processor.rs
+++ b/opentelemetry-user-events-logs/src/logs/processor.rs
@@ -191,7 +191,7 @@ where
     }
 
     /// Builds the processor with the configured callback
-    pub fn build(self) -> Result<Processor<C>, Box<dyn Error>> {
+    pub fn build(self) -> Result<Processor<C>, Box<dyn Error + Send + Sync + 'static>> {
         // Validate provider name
         if self.provider_name.is_empty() {
             return Err("Provider name cannot be empty.".into());