diff --git a/.changelog/unreleased/bug-fixes/1989-fix-ibc-client-validation.md b/.changelog/unreleased/bug-fixes/1989-fix-ibc-client-validation.md
new file mode 100644
index 0000000000..8adbad706a
--- /dev/null
+++ b/.changelog/unreleased/bug-fixes/1989-fix-ibc-client-validation.md
@@ -0,0 +1,2 @@
+- Update ibc-rs with the fix for ibc-rs/#911
+  ([\#1989](https://github.com/anoma/namada/issues/1989))
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index d84b439dad..f6dd59ef95 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3149,7 +3149,7 @@ dependencies = [
 [[package]]
 name = "ibc"
 version = "0.41.0"
-source = "git+https://github.com/heliaxdev/cosmos-ibc-rs.git?rev=38a827d3901e590b2935ee5b6b81b4d67c399560#38a827d3901e590b2935ee5b6b81b4d67c399560"
+source = "git+https://github.com/heliaxdev/cosmos-ibc-rs.git?rev=206cb5fa74a7ca38038b937d202ae39fbbd63c19#206cb5fa74a7ca38038b937d202ae39fbbd63c19"
 dependencies = [
  "bytes",
  "cfg-if 1.0.0",
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 31fc8e8314..05433958e8 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -68,7 +68,7 @@ ferveo = {optional = true, git = "https://github.com/anoma/ferveo", rev = "e5abd
 ferveo-common = {git = "https://github.com/anoma/ferveo", rev = "e5abd0acc938da90140351a65a26472eb495ce4d"}
 tpke = {package = "group-threshold-cryptography", optional = true, git = "https://github.com/anoma/ferveo", rev = "e5abd0acc938da90140351a65a26472eb495ce4d"}
 # TODO using the same version of tendermint-rs as we do here.
-ibc = { git = "https://github.com/heliaxdev/cosmos-ibc-rs.git", rev = "38a827d3901e590b2935ee5b6b81b4d67c399560", features = ["serde"], optional = true}
+ibc = { git = "https://github.com/heliaxdev/cosmos-ibc-rs.git", rev = "206cb5fa74a7ca38038b937d202ae39fbbd63c19", features = ["serde"], optional = true}
 ibc-proto = {git = "https://github.com/heliaxdev/ibc-proto-rs.git", rev = "31892ee743b2af017d5629b2af419ee20b6100c7", default-features = false, optional = true}
 ics23.workspace = true
 impl-num-traits = "0.1.2"
diff --git a/wasm/Cargo.lock b/wasm/Cargo.lock
index d29e22cdb1..545b2bb279 100644
--- a/wasm/Cargo.lock
+++ b/wasm/Cargo.lock
@@ -2634,7 +2634,7 @@ dependencies = [
 [[package]]
 name = "ibc"
 version = "0.41.0"
-source = "git+https://github.com/heliaxdev/cosmos-ibc-rs.git?rev=38a827d3901e590b2935ee5b6b81b4d67c399560#38a827d3901e590b2935ee5b6b81b4d67c399560"
+source = "git+https://github.com/heliaxdev/cosmos-ibc-rs.git?rev=206cb5fa74a7ca38038b937d202ae39fbbd63c19#206cb5fa74a7ca38038b937d202ae39fbbd63c19"
 dependencies = [
  "bytes",
  "cfg-if 1.0.0",