diff --git a/cronos/cometbft.Dockerfile b/cronos/cometbft.Dockerfile
index 05f88016..c705f964 100644
--- a/cronos/cometbft.Dockerfile
+++ b/cronos/cometbft.Dockerfile
@@ -7,8 +7,12 @@ FROM alpine:3.21
 RUN apk add --no-cache ca-certificates curl jq
 
 ARG CRONOS_CRONOS_VERSION
+# Version may carry a "-testnet" suffix (e.g. v1.7.8-testnet): the release TAG is the
+# base version, the ASSET keeps the suffix (testnet builds use tcrc bech32 prefixes -
+# a mainnet binary cannot parse testnet validator addresses).
 RUN _ver="${CRONOS_CRONOS_VERSION#v}" && \
-    curl -fsSL "https://github.com/crypto-org-chain/cronos/releases/download/${CRONOS_CRONOS_VERSION}/cronos_${_ver}_Linux_x86_64.tar.gz" \
+    _tag="v${_ver%-testnet}" && \
+    curl -fsSL "https://github.com/crypto-org-chain/cronos/releases/download/${_tag}/cronos_${_ver}_Linux_x86_64.tar.gz" \
       -o /tmp/cronos.tar.gz && \
     tar -xzf /tmp/cronos.tar.gz -C /tmp && \
     install -m 755 /tmp/bin/cronosd /usr/local/bin/cronosd && \