diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 5c1a0456735..7d9b44aa53d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -37,6 +37,7 @@ targetSdk = "34"
 compileSdk = "34"
 minSdk = "21"
 spotless = "7.0.4"
+gummyBears = "0.12.0"
 
 [plugins]
 kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
@@ -62,6 +63,7 @@ springboot3 = { id = "org.springframework.boot", version.ref = "springboot3" }
 springboot4 = { id = "org.springframework.boot", version.ref = "springboot4" }
 spring-dependency-management = { id = "io.spring.dependency-management", version = "1.0.11.RELEASE" }
 gretty = { id = "org.gretty", version = "4.0.0" }
+animalsniffer = { id = "ru.vyarus.animalsniffer", version = "2.0.1" }
 
 [libraries]
 apache-httpclient = { module = "org.apache.httpcomponents.client5:httpclient5", version = "5.0.4" }
@@ -176,6 +178,9 @@ springboot4-starter-jdbc = { module = "org.springframework.boot:spring-boot-star
 springboot4-starter-actuator = { module = "org.springframework.boot:spring-boot-starter-actuator", version.ref = "springboot4" }
 timber = { module = "com.jakewharton.timber:timber", version = "4.7.1" }
 
+# Animalsniffer signature
+gummy-bears-api21 = { module = "com.toasttab.android:gummy-bears-api-21", version.ref = "gummyBears" }
+
 # tomcat libraries
 tomcat-catalina = { module = "org.apache.tomcat:tomcat-catalina", version = "9.0.108" }
 tomcat-embed-jasper = { module = "org.apache.tomcat.embed:tomcat-embed-jasper", version = "9.0.108" }
diff --git a/sentry-apollo-3/build.gradle.kts b/sentry-apollo-3/build.gradle.kts
index d9971397a2f..8819e0993d4 100644
--- a/sentry-apollo-3/build.gradle.kts
+++ b/sentry-apollo-3/build.gradle.kts
@@ -9,6 +9,7 @@ plugins {
   alias(libs.plugins.errorprone)
   alias(libs.plugins.gradle.versions)
   alias(libs.plugins.buildconfig)
+  alias(libs.plugins.animalsniffer)
 }
 
 tasks.withType<KotlinCompile>().configureEach {
@@ -37,6 +38,9 @@ dependencies {
   testImplementation(libs.mockito.kotlin)
   testImplementation(libs.mockito.inline)
   testImplementation(libs.okhttp.mockwebserver)
+
+  val gummyBearsModule = libs.gummy.bears.api21.get().module
+  signature("${gummyBearsModule}:${libs.versions.gummyBears.get()}@signature")
 }
 
 configure<SourceSetContainer> { test { java.srcDir("src/test/java") } }
@@ -57,6 +61,7 @@ tasks {
   check {
     dependsOn(jacocoTestCoverageVerification)
     dependsOn(jacocoTestReport)
+    dependsOn(animalsnifferMain)
   }
 }
 
diff --git a/sentry-apollo-4/build.gradle.kts b/sentry-apollo-4/build.gradle.kts
index 931a646eb52..85ea2c3b52b 100644
--- a/sentry-apollo-4/build.gradle.kts
+++ b/sentry-apollo-4/build.gradle.kts
@@ -9,6 +9,7 @@ plugins {
   alias(libs.plugins.errorprone)
   alias(libs.plugins.gradle.versions)
   alias(libs.plugins.buildconfig)
+  alias(libs.plugins.animalsniffer)
 }
 
 configure<JavaPluginExtension> {
@@ -44,6 +45,9 @@ dependencies {
   testImplementation(libs.mockito.inline)
   testImplementation(libs.okhttp.mockwebserver)
   testImplementation("org.jetbrains.kotlin:kotlin-reflect:2.0.0")
+
+  val gummyBearsModule = libs.gummy.bears.api21.get().module
+  signature("${gummyBearsModule}:${libs.versions.gummyBears.get()}@signature")
 }
 
 configure<SourceSetContainer> { test { java.srcDir("src/test/java") } }
@@ -64,6 +68,7 @@ tasks {
   check {
     dependsOn(jacocoTestCoverageVerification)
     dependsOn(jacocoTestReport)
+    dependsOn(animalsnifferMain)
   }
 }
 
diff --git a/sentry-apollo/build.gradle.kts b/sentry-apollo/build.gradle.kts
index ce6ceb08bb6..909d52aa127 100644
--- a/sentry-apollo/build.gradle.kts
+++ b/sentry-apollo/build.gradle.kts
@@ -9,6 +9,7 @@ plugins {
   alias(libs.plugins.errorprone)
   alias(libs.plugins.gradle.versions)
   alias(libs.plugins.buildconfig)
+  alias(libs.plugins.animalsniffer)
 }
 
 tasks.withType<KotlinCompile>().configureEach {
@@ -38,6 +39,9 @@ dependencies {
   testImplementation(libs.mockito.kotlin)
   testImplementation(libs.mockito.inline)
   testImplementation(libs.okhttp.mockwebserver)
+
+  val gummyBearsModule = libs.gummy.bears.api21.get().module
+  signature("${gummyBearsModule}:${libs.versions.gummyBears.get()}@signature")
 }
 
 configure<SourceSetContainer> { test { java.srcDir("src/test/java") } }
@@ -58,6 +62,7 @@ tasks {
   check {
     dependsOn(jacocoTestCoverageVerification)
     dependsOn(jacocoTestReport)
+    dependsOn(animalsnifferMain)
   }
 }
 
diff --git a/sentry-kotlin-extensions/build.gradle.kts b/sentry-kotlin-extensions/build.gradle.kts
index e5e6c89a9d0..55aca007130 100644
--- a/sentry-kotlin-extensions/build.gradle.kts
+++ b/sentry-kotlin-extensions/build.gradle.kts
@@ -9,6 +9,7 @@ plugins {
   alias(libs.plugins.errorprone)
   alias(libs.plugins.gradle.versions)
   alias(libs.plugins.detekt)
+  alias(libs.plugins.animalsniffer)
 }
 
 tasks.withType<KotlinCompile>().configureEach {
@@ -32,6 +33,9 @@ dependencies {
   testImplementation(libs.kotlinx.coroutines)
   testImplementation(libs.kotlinx.coroutines.test)
   testImplementation(libs.mockito.kotlin)
+
+  val gummyBearsModule = libs.gummy.bears.api21.get().module
+  signature("${gummyBearsModule}:${libs.versions.gummyBears.get()}@signature")
 }
 
 configure<SourceSetContainer> { test { java.srcDir("src/test/java") } }
@@ -52,6 +56,7 @@ tasks {
   check {
     dependsOn(jacocoTestCoverageVerification)
     dependsOn(jacocoTestReport)
+    dependsOn(animalsnifferMain)
   }
 }
 
diff --git a/sentry-ktor-client/build.gradle.kts b/sentry-ktor-client/build.gradle.kts
index 1fb3e98f126..2965e81ebd3 100644
--- a/sentry-ktor-client/build.gradle.kts
+++ b/sentry-ktor-client/build.gradle.kts
@@ -9,6 +9,7 @@ plugins {
   alias(libs.plugins.errorprone)
   alias(libs.plugins.gradle.versions)
   alias(libs.plugins.buildconfig)
+  alias(libs.plugins.animalsniffer)
 }
 
 tasks.withType<KotlinCompile>().configureEach {
@@ -39,6 +40,9 @@ dependencies {
   testImplementation(libs.ktor.client.core)
   testImplementation(libs.ktor.client.java)
   testImplementation(libs.okhttp.mockwebserver)
+
+  val gummyBearsModule = libs.gummy.bears.api21.get().module
+  signature("${gummyBearsModule}:${libs.versions.gummyBears.get()}@signature")
 }
 
 configure<SourceSetContainer> { test { java.srcDir("src/test/java") } }
@@ -59,6 +63,7 @@ tasks {
   check {
     dependsOn(jacocoTestCoverageVerification)
     dependsOn(jacocoTestReport)
+    dependsOn(animalsnifferMain)
   }
 }
 
diff --git a/sentry-okhttp/build.gradle.kts b/sentry-okhttp/build.gradle.kts
index e2c10ffc5a1..f7178cf1dfe 100644
--- a/sentry-okhttp/build.gradle.kts
+++ b/sentry-okhttp/build.gradle.kts
@@ -9,6 +9,7 @@ plugins {
   alias(libs.plugins.errorprone)
   alias(libs.plugins.gradle.versions)
   alias(libs.plugins.buildconfig)
+  alias(libs.plugins.animalsniffer)
 }
 
 tasks.withType<KotlinCompile>().configureEach {
@@ -38,6 +39,9 @@ dependencies {
   testImplementation(libs.mockito.inline)
   testImplementation(libs.okhttp)
   testImplementation(libs.okhttp.mockwebserver)
+
+  val gummyBearsModule = libs.gummy.bears.api21.get().module
+  signature("${gummyBearsModule}:${libs.versions.gummyBears.get()}@signature")
 }
 
 configure<SourceSetContainer> { test { java.srcDir("src/test/java") } }
@@ -58,6 +62,7 @@ tasks {
   check {
     dependsOn(jacocoTestCoverageVerification)
     dependsOn(jacocoTestReport)
+    dependsOn(animalsnifferMain)
   }
 }
 
diff --git a/sentry/build.gradle.kts b/sentry/build.gradle.kts
index 56df9121710..bbeb9cc62df 100644
--- a/sentry/build.gradle.kts
+++ b/sentry/build.gradle.kts
@@ -9,6 +9,7 @@ plugins {
   alias(libs.plugins.errorprone)
   alias(libs.plugins.gradle.versions)
   alias(libs.plugins.buildconfig)
+  alias(libs.plugins.animalsniffer)
 }
 
 tasks.withType<KotlinCompile>().configureEach {
@@ -31,6 +32,9 @@ dependencies {
   testImplementation(libs.msgpack)
   testImplementation(libs.okio)
   testImplementation(projects.sentryTestSupport)
+
+  val gummyBearsModule = libs.gummy.bears.api21.get().module
+  signature("${gummyBearsModule}:${libs.versions.gummyBears.get()}@signature")
 }
 
 configure<SourceSetContainer> { test { java.srcDir("src/test/java") } }
@@ -44,6 +48,19 @@ tasks.jacocoTestReport {
   }
 }
 
+animalsniffer {
+  ignore =
+    listOf(
+      // We manually check on Android if it's available (API 26+).
+      "java.time.Instant"
+    )
+}
+
+tasks.animalsnifferMain {
+  // Uses java.util.function.Supplier, but must be manually invoked.
+  exclude("**/io/sentry/SentryWrapper.class")
+}
+
 tasks {
   jacocoTestCoverageVerification {
     violationRules { rule { limit { minimum = Config.QualityPlugins.Jacoco.minimumCoverage } } }
@@ -51,6 +68,7 @@ tasks {
   check {
     dependsOn(jacocoTestCoverageVerification)
     dependsOn(jacocoTestReport)
+    dependsOn(animalsnifferMain)
   }
   test {
     jvmArgs("--add-opens", "java.base/java.util.concurrent=ALL-UNNAMED")