diff --git a/versions.lock b/versions.lock
index 4f259d666..d9f21fe7f 100644
--- a/versions.lock
+++ b/versions.lock
@@ -18,8 +18,8 @@ com.google.guava:guava:32.1.3-jre (14 constraints: 93eabc48)
 com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava (1 constraints: bd17c918)
 com.google.j2objc:j2objc-annotations:2.8 (1 constraints: be09f5a0)
 com.palantir.common:streams:2.2.0 (1 constraints: 0605fb35)
-com.palantir.conjure.java:conjure-lib:7.20.0 (1 constraints: 3b05513b)
-com.palantir.conjure.java.api:errors:2.38.0 (2 constraints: 611564db)
+com.palantir.conjure.java:conjure-lib:7.21.0 (1 constraints: 3c05543b)
+com.palantir.conjure.java.api:errors:2.38.0 (2 constraints: 63156adb)
 com.palantir.conjure.java.api:service-config:2.38.0 (2 constraints: 5d1913dd)
 com.palantir.conjure.java.api:ssl-config:2.38.0 (3 constraints: ea2afaa5)
 com.palantir.conjure.java.runtime:client-config:7.66.0 (1 constraints: 4505733b)
diff --git a/versions.props b/versions.props
index d19dd2d0e..b5547ecba 100644
--- a/versions.props
+++ b/versions.props
@@ -4,7 +4,7 @@ com.google.guava:guava = 32.1.3-jre
 com.google.testing.compile:compile-testing = 0.19
 com.palantir.common:streams = 2.2.0
 com.palantir.conjure:conjure = 4.38.0
-com.palantir.conjure.java:* = 7.20.0
+com.palantir.conjure.java:* = 7.21.0
 com.palantir.conjure.java.api:* = 2.38.0
 com.palantir.conjure.java.runtime:* = 7.66.0
 com.palantir.refreshable:* = 2.3.0