diff --git a/versions.lock b/versions.lock
index 1769da31c..ba39e744c 100644
--- a/versions.lock
+++ b/versions.lock
@@ -90,7 +90,7 @@ com.google.jimfs:jimfs:1.3.0 (1 constraints: 5a141061)
 com.google.testing.compile:compile-testing:0.21.0 (1 constraints: 89149575)
 com.google.truth:truth:1.4.0 (2 constraints: 72265a6a)
 com.netflix.nebula:nebula-test:10.2.0 (1 constraints: 35052d3b)
-com.palantir.conjure.java:conjure-lib:8.20.0 (1 constraints: 3c05573b)
+com.palantir.conjure.java:conjure-lib:8.21.0 (1 constraints: 3d055a3b)
 com.palantir.conjure.java.api:errors:2.52.0 (2 constraints: 6d21cab0)
 com.palantir.conjure.java.api:test-utils:2.52.0 (1 constraints: 3b05453b)
 com.palantir.conjure.java.runtime:conjure-java-annotations:8.8.0 (1 constraints: 12052b36)
diff --git a/versions.props b/versions.props
index 259d1f7a2..be2c4e2f8 100644
--- a/versions.props
+++ b/versions.props
@@ -23,7 +23,7 @@ com.palantir.gradle.failure-reports:* = 1.2.0
 com.fasterxml.jackson.*:* = 2.16.1
 com.github.stefanbirkner:system-rules = 1.19.0
 com.netflix.nebula:nebula-test = 10.2.0
-com.palantir.conjure.java:* = 8.20.0
+com.palantir.conjure.java:* = 8.21.0
 com.palantir.conjure.java.api:* = 2.52.0
 com.palantir.conjure.java.runtime:* = 8.8.0
 com.palantir.tokens:auth-tokens = 3.18.0